K4600 Focus Issue

[KLOV]

Hi,
Working on a K4600 and did a complete cap kit, also rejuvenated the CRT - produced much fireworks!
The display is much better but the focus is not great.
At this point the focus pot is full CCW and it just needs a little more to make it great.
After searching the Fourms for a solution I came across a post regarding the ceramic cap between the CRT connector and GND - It is a 100pF 1.5KV ceramic cap.
On all previous K4600's I had worked on it was always a very large disc but on this one...

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Source: https://forums.arcade-museum.com/thread ... ue.532388/