I've just started the restoration on a working excellent condition 2245. I completed the 800 PCB last night and started the 750 Amp Module tonight and noticed the round type bias transistor. I remember reading about the 2270 that had a Service Bulletin that suggested to update and replace the transistor at this location but I can't find info if the same is required for the 2245. Given the similarities between the 2245 and 2270 would it be safe to assume I should do the same Service Bulletin update? If so is there a particular sub most have used? Having a problem loading the photos I took earlier. GT.