The other thread ended with Q8 catching on fire and no resolution.  It's better if you just tell us what is going on with your amp.

You can monitor the voltage across R97 (one probe at each end).  If you see more than 5VDC, stop.  As you move the variac voltages may jump around so give it a couple seconds to stabilize.
Also keep checking for DC at amp output.
If you are seeing low current on the variac meter, you should be ok to raise the voltage.

I am measuring current as well, so far it stays very low. I'll try upping the AC voltage today. I'm just worried about R97 burning up, or Q4 shorting again. What do you think I should look for next?
Also, what I am experiencing is almost identical to this post: https://www.ssguitar.com/index.php?topic=4235.msg42173#msg42173
Thanks again for the help

Well shoot. I was assuming the same pinouts as T1 and T2. Here it is corrected.

T3 E -40.6v
   B -40.6v
   C -40.1v

T5 E 0.6v
   B 39.0v
   C 31.4v

T3 pins 1,2,3=C,B,E
T5 pins 1,2,3=E,B,C

Thanks for the quick response!!

see attached

Again, voltages that are impossible for e,b,c locations.
Is it another mistake, or is it possible you have some transistors in backwards?

Looking for schematic for Crate Gunnison acoustic amp

If you do not have a load connected, continue increasing voltage from variac and monitoring DC at output.
It would help if you could monitor AC current from the variac as well, does the variac have a current meter?  Do you have a dim bulb tester?

Greetings, I am having an almost identical problem with a Hartke A35 here:
https://www.ssguitar.com/index.php?topic=5343.0
Thanks for any help with this

     - Jesse

T3 E -40.1v
   B -40.6v
   C -40.6v

T5 E 0.6v
   B 39.0v
   C 31.4v

I'll get some pics up when I can, I'm out of town for a couple days. Had time to snag some voltages before i left.