Vert size & centering are on the vert module. Either a
9-92 or newer & better 9-147.
You should also be sure the 4-lead cap was updated. Its
mounted on the horz output heat sink. If orange its OK.
If white it MUST be changed. Early runs did not have one. They
use IIRC 5 white caps marked 22-5001. White ones should be
changed but its not as critical.
73 Zeno
LFOD !