My recently back from the dead Polaris had been working well but seems to have developed a bit of a tuning issue.  When I first turn it on cold, "tune all" won't tune channel 1 and it gets taken out of service.  I wait a while, try it again and it works - but osc 1 and 2 definitely aren't quite in tune with each other.  As I leave it on and keep re-tuning all, they keep getting closer and eventually (an hour?) it sounds fine.

From what I've read here, sounds like s/h cap might be probable cause.  Any comments?  Any other suggestions?

Thanks,

Steve