my engine is not tight at all. i can spin the flyweel over pretty easly when it is cold with the glow plug in. there is enough compression for the engine to run but it not realy thight where i can barely turn the fly wheel over and i did use a roto start. my drill doesn't even have enough rpm to get the engine running. i took the o-ring that was on the shaft off and that seams like it stoped the ware on the bushing but now it will proably leak out of the back plat through there but then again the pull start doen't have a o-ring on the shaft so maby it wont.