Hey gang,
Ran on a great dirt track today, the temp was 93 and the humidty could kill a full grown man. The cars ran great early and then after a few laps started dieing. I tried to richen them up a bit and they simply would not run. As soon as they started this I chenged filters (well oiled) and tried again, but no luck. They would run great early and then started giving me trouble. Any tips on riching/leaning the motors? I donot want to burn them up, but unlike my boats which all tell how many turns out from factory the needle setting is, the JAto does not. Any pros have time to give a newb some tips on how to rich/lean the motor and how to check it before a run to ensure I have it right?

Thanks,

LRT