Ok, I don't know why but I was thinking of 4 tab transistors, those ground tabs kind of merged in my mind
Those aren't resistors though, they're ceramic chip caps on the base (input) and clamped mica caps on the collector (output).
You can usually get away with re-soldering the chip caps, but sometimes they need to be replaced if they've been damaged by the heat.
I usually carefully lift the base tab and clean up the connections, what happens is from temperature cycling the solder under the tab cracks, creating a high resistance and arcing, which creates more heat, which melts the caps right off the board.
Also check the coupling cap between the driver and final, those will get bad solder joints as well.
And go over the low pass filter solder joints, they get hairline cracks in them.
If re-soldering doesn't fix it you might have a bad transistor, could be the final, could be one of the others. Unless you're using it out of band it's not likely to be a programming/alignment problem.