FAST never picked up any knock ever. Motor was built once, the first time by myself. After this bull, im sending it to RPE to take care of it. He'll probably tell me the crank and block is no good yada yada 10 grand. You can see my build and all teh specs including ring gap if you search "complete engine build" in general tech". It was pre-engine tech. And yes i know, everyone has a stock rod stock crank stock ECU, 8445 heads with alky running 9's on a 2004R full weight 3700lb GN. Im becoming a firm believer of KISS (keep it simple stupid). Ditch the fast and the ALKY run a turbo tweek chip and 116 with a good tune.