I have a westinghouse vph4058-460-3 Phasetrol. curcuit board. I am firing scrs for two large rectifiers, each one requiring a board. One went out and I can not get the replacement to even out the amperage. Since both rectifiers run together I need them as even as possible.I have extra boards, I noticed there are diffierent resisters on the board(R Pad) that seem to vary with each board. I was wondering if you had a print on this or a manual. Plus I would like the price to send the bad one out for repair.