diff --git a/scripts/frank-primary.env b/scripts/frank-primary.env
index 3326058..ef9e5fd 100644
--- a/scripts/frank-primary.env
+++ b/scripts/frank-primary.env
@@ -130,8 +130,8 @@ FRANK_PRIMARY_TTM_MIN_MIB=140000
 # purpose.
 FRANK_PRIMARY_EXTRA_ARGS=
 # The .rad's minimum size in MiB (deployer gate; a truncated convert is a
-# guaranteed long-timeout boot instead of a fast failure). Plan-only measured
-# the container at 172.76 GiB = 176,906 MiB - the checkpoint's own fp8 mass
-# (experts ride byte-stacked, the PLE re-encodes at the checkpoint's scale),
-# not the ~161 GiB first estimate.
-FRANK_PRIMARY_RAD_MIN_MIB=178000
+# guaranteed long-timeout boot instead of a fast failure). The converted
+# container measured 177,109 MiB (1,857,127,997,440 B = 173.0 GiB; the
+# plan-only estimate 172.76 GiB covers the data planes but not the metadata
+# tail) - floor sits just under the payload.
+FRANK_PRIMARY_RAD_MIN_MIB=177000