Originally Posted by
aznitronut
Does the engine still have good pinch on the piston and sleeve? If you only have a break in and one day on track, it's not totally broken in yet, get your shims straightened out, and be patient, engines will tend to run hotter till fully broken in.
It's broken in. I took it to the track at least 10 times only to put one my other engines on for racing since the RB wouldn't function properly. I'll get some lucky 7 tomorrow and put shims back in. I keep hearing a OS .25 calling my name! Pain in the ass Italian engines, lol.