Thanks, again. I went ahead and ordered SCR 2 and 5, rather than testing the installed rectifiers. As far as the condition of everything goes, all looks good in the where the control card, relays, capacitor, rectifiers, etc. are located. A local shop wanted over $1K to replace the accelerator potentiometer and foot pedal microswitches, which I'd already tested. I replaced them anyway, considering them to be the experts. It obviously didn't fix it, but at least I got it done for $65 and not $1100. I'll update with results of replacing the SCR's once received.