Zenith CCII,23FC45 vertical issue

[Mark0M]

Hello. This set works except the I’m not getting full vertical deflection. There’s about an 1 1/2” top and bottom with no picture. The pot on the vertical module is maxed out. I replaced a bad 100uf cap (open)behind the module No change.
Checked the two electrolytic caps and reflowed solder connections on vert board. No change. Heat sink seems a tad to warm for the short time that it was on. Don’t know if this is normal as I don’t have any experience with TVs. Set has had Orange cap update. I have a sams ordered and the 3.5uf “start”
Cap for the power supply. Any help to point me right direction would be greatly appreciated! Thanks