diff --git a/shared/address_explorer.py b/shared/address_explorer.py
index ed95e48f..0332f60d 100644
--- a/shared/address_explorer.py
+++ b/shared/address_explorer.py
@@ -17,18 +17,7 @@ from glob import settings
 from auth import write_sig_file
 from charcodes import KEY_QR, KEY_NFC, KEY_PAGE_UP, KEY_PAGE_DOWN, KEY_HOME, KEY_LEFT, KEY_RIGHT
 from charcodes import KEY_CANCEL
-from utils import show_single_address, problem_file_line
-
-def truncate_address(addr):
-    # Truncates address to width of screen, replacing middle chars
-    if not version.has_qwerty:
-        # - 16 chars screen width
-        # - but 2 lost at left (menu arrow, corner arrow)
-        # - want to show not truncated on right side
-        return addr[0:6] + '⋯' + addr[-6:]
-    else:
-        # tons of space on Q1
-        return addr[0:12] + '⋯' + addr[-12:]
+from utils import show_single_address, problem_file_line, truncate_address
 
 def censor_address(addr):
     # We don't like to show the user full multisig addresses because we cannot be certain
diff --git a/shared/ccc.py b/shared/ccc.py
index 3bd790fa..4c4aa98b 100644
--- a/shared/ccc.py
+++ b/shared/ccc.py
@@ -4,7 +4,7 @@
 #
 import gc, chains, version, ngu, web2fa, bip39, re
 from chains import NLOCK_IS_TIME
-from utils import swab32, a2b_hex, b2a_hex, xfp2str, truncate_address, pad_raw_secret
+from utils import swab32, xfp2str, truncate_address, pad_raw_secret
 from glob import settings
 from ux import ux_confirm, ux_show_story, the_ux, OK, ux_dramatic_pause, ux_enter_number, ux_aborted
 from menu import MenuSystem, MenuItem, start_chooser
@@ -364,9 +364,9 @@ be ready to show it as a QR, before proceeding.'''
         # - just a shortcut, since they have the words, and could enter them
         # - one-way trip because the CCC feature won't be enabled inside the temp seed settings
         if await ux_show_story(
-                'Loads the CCC controlled seed (key C) as a Temporary Seed and allows '
-                'easy use of all Coldcard features on that key.\n\nIf you save into Seed Vault, '
-                'access to CCC Config menu is quick and easy.') != 'y':
+            'Loads the CCC controlled seed (key C) as a Temporary Seed and allows '
+            'easy use of all Coldcard features on that key.\n\nIf you save into Seed Vault, '
+            'access to CCC Config menu is quick and easy.') != 'y':
             return
 
         from seed import set_ephemeral_seed
diff --git a/shared/chains.py b/shared/chains.py
index e77611b3..42e5e9f0 100644
--- a/shared/chains.py
+++ b/shared/chains.py
@@ -38,7 +38,7 @@ class ChainsBase:
     curve = 'secp256k1'
     menu_name = None        # use 'name' if this isn't defined
     core_name = None        # name of chain's "core" p2p software
-    CCC_MIN_BLOCK = 0
+    ccc_min_block = 0
 
     # b44_cointype comes from
     #    <https://github.com/satoshilabs/slips/blob/master/slip-0044.md>
@@ -299,7 +299,7 @@ class BitcoinMain(ChainsBase):
     # see <https://github.com/bitcoin/bitcoin/blob/master/src/chainparams.cpp#L140>
     ctype = 'BTC'
     name = 'Bitcoin Mainnet'
-    CCC_MIN_BLOCK = 865572
+    ccc_min_block = 865572
 
     slip132 = {
         AF_CLASSIC:     Slip132Version(0x0488B21E, 0x0488ADE4, 'x'),
diff --git a/shared/utils.py b/shared/utils.py
index 13e17491..fd253e4d 100644
--- a/shared/utils.py
+++ b/shared/utils.py
@@ -714,4 +714,15 @@ def cleanup_payment_address(s):
 
     raise ValueError('bad address value: ' + s)
 
+def truncate_address(addr):
+    # Truncates address to width of screen, replacing middle chars
+    if not version.has_qwerty:
+        # - 16 chars screen width
+        # - but 2 lost at left (menu arrow, corner arrow)
+        # - want to show not truncated on right side
+        return addr[0:6] + '⋯' + addr[-6:]
+    else:
+        # tons of space on Q1
+        return addr[0:12] + '⋯' + addr[-12:]
+
 # EOF
diff --git a/shared/web2fa.py b/shared/web2fa.py
index dcf62388..84f25d5a 100644
--- a/shared/web2fa.py
+++ b/shared/web2fa.py
@@ -72,16 +72,8 @@ async def perform_web2fa(label, shared_secret):
         #
         from ux_mk4 import ux_input_digits
 
-        def limit_len(n):
-            ll = len(n)
-            if ll == 8:
-                return n
-            if ll > 8:
-                return n[0:8]
-            return ''
-
         while 1:
-            got = await ux_input_digits('', limit_len, maxlen=8,
+            got = await ux_input_digits('', maxlen=8,
                                         prompt="8-digits From Web")
 
             if not got:
diff --git a/shared/xor_seed.py b/shared/xor_seed.py
index e7163e66..465f5e86 100644
--- a/shared/xor_seed.py
+++ b/shared/xor_seed.py
@@ -69,7 +69,7 @@ Otherwise, press {ok} to continue.'''.format(n=num_parts, ok=OK), escape='2')
 
     raw_secret = bytes(32)
     try:
-        with stash.SensitiveValues() as sv:
+        with SensitiveValues() as sv:
             if sv.deltamode:
                 # die rather than give up our secrets
                 import callgate
@@ -294,7 +294,7 @@ or press (2) for 18 words XOR.''' % OK, escape="12")
         if ch == 'x': return
         if ch == '1':
             dis.fullscreen("Wait...")
-            with stash.SensitiveValues() as sv:
+            with SensitiveValues() as sv:
                 if sv.deltamode:
                     # die rather than give up our secrets
                     import callgate