In a truggy I would use the JP3. The JP2 is suited more for the top end. You have to get those big tires rotating

I had an issue with my P5 Sunday and was wondering if anyone could help me out...

Motor was running very hot but didn't feel lean or anything. So I richened it up a little and then mid run it seemed like it was falling out of tune and became richer. It was so slow it couldn't get out of it's own way. Pulled it off the track and temp checked at 280 degrees but was idling fine. So I went back, pulled the plug and the wire was white and grey So I put a new plug in it and tuned it in my pit then went back out for another qualifier. Seemed to run great through warm up and first 3 or 4 minutes in. The last minute it did the same thing. Pulled it over and it is idling fine. Temp it and it's 311 So I thought I had an airleak at the front main bearing. Pulled the motor apart and it's not the main bearing and I don't see any other leaks on the motor. Still has good pinch but the top of the piston and head button look like they've been blasted with a very, very fine sand.

Any ideas? It's a P5x, running 30% Sidewinder, with extra copper head shim and a McCoy MC59 plug...