No its definitely not running right. These idle around three amps at the most.
I would have used the original IRFP044 devices unless you changed the gate resistor. As I recall these drive directly from the chip so the added gate capacitance can cause issues since their is no totem pole drivers to handle gate drive. You might also want to scope the signal to the gate leads the PWM chip may have been damaged when the fets failed.
You could also remove the supply fets back to one device per primary winding to see if the fets are the problem. This should drop the capacitance back near its expected range enough to let the amp idle properly.
Its pretty tough to hurt one of these old Adcoms. I have seen power traces blow open like fuse links and once repaired the amp went right back into service with no other issues, so for the fets to be damaged in the supply and no blown open traces it sounds like it may have been revered polarity hooked up. I own several of these personally and while I do have schematic info its paper not PDF file so I don't have it handy to send top you, sorry I just never got around to scanning it.
Also when you get the chance check the DC output on each set of speaker terminals. That is what that other adjustment in each channel is for. Perhaps you lower a bit closer to zero and get lower current draw also if the amp channels have damage in them.
Let me know what you find....
