recently installed the speedball upgrade and did not get expected readings for voltage checks measurements for the right channel. when i measure terminals 5, I get around 57 volts instead of 75 volts. Looking at the circuit diagram i think the problem occurs at the node that the collector of the MJE-350 transistor is connected to. I think it maybe a problem with the MJE-350 transistor but I'm not sure. Unfortunately I shorted out the two red LEDs on the left (comparing voltage readings between both channels) in the process of trouble shooting. So I am going to have to order new parts.