I have a Megabaja and after 2 gallons the stock engine lost compression and began hard to start. Had to let it cool and restart. I bought a surefire .32 and it ran awesome then after 1 gallon...same thing I just tore it down for inspection and all looks good. No scratches in piston etc. Put it back in and started it. Seems to run fine but gets very hot at idle and takes alot of fuel prime to get it started....still low compression. ...I am used to aircraft and helis and am new to cars/trucks....am i running them too hot/lean? Do i tune them with a temp gun not by smoke?ear?....please help