[Heathkit] SB-610 focus issues

[Chuck Penson]

Hi, all;

I've got an SB-610 that works great but the trace goes out of focus at the far ends. So, good in the middle and not so good at either end. One end or the other can be brought into focus but then the middle goes out of focus. 

Have checked all the focus related voltages and components. 

Any ideas?

Thanks!

Chuck / WA7ZZE