I can't seem to get it to work right. It's made by Electronics Unlimited in
Lebanon, Tennesse. The capacitors on the primary side of the output
transformer were changed at some point and I can't find the right value. If
anyone has one of these or a schematic, it would be extremely helpful.

It has a high/low switch. If I put it on low or put in less power, the power
meter reading shoots up to 150 or so with a reflected reading of 40 watts,
but drops back to 50 watts with modulation. On high with 4 watts in, it
seems fairly normal, but not completely. It bounces around 75 watts. Is
anyone familiar with this amp? Is it class C? It has an AM/SSB switch. The
transistors are 2 MRF455A's. The bases are grounded through the input
transformer, which has a center tap to a choke to ground. I see no forward
bias. Is this what causes the erratic behavior? Any help with this thing
other than toss it in the river would be appreciated.

Chris