Hi,
I got a Sunn 200S bass amp recently. 1969/70 perhaps? Apparently, it's essentially a Dynaco amp, not sure which one. It has been modded with the SDS Labs Mk3 Capacitor Board from Triode Electronics to replace the large can cap and solid state rectification has been added as well
http://www.triodeelectronics.com/sdslabmk3cap1.html
I have bias probes with a meter and I biased the KT88s to within .5ma of each other. (I got a pair of matched Gold Lion Re-issues from Jim McShane).
Are there some voltage points I should be checking to make sure all is operating up to spec here?