Yeah, I'd love to watch the voltage across those resistors, but like I've said, I simply read nothing when I measure voltage across them. I've turned the pots all the way up before (until they start clicking at the max clockwise position), and I still read nothing. The output transistors don't even begin to warm up their heatsinks no matter how long I wait. I know the trimpot works though because C7/C16 and the resistors next to them have measurable DCV changes when I start messing with the trimpot.
Thanks for the help so far. Hopefully fiddling with the trimpots will help. At this point, all I have to watch out for is making sure the temperature doesn't destroy those resistors and transistors, right?