thanks for the info. i know the cyclinder has been bored out .010 over and checks within specs as far down as the piston will go. it was rebuilt about 2 years ago but was not broken in properly and the rings never seated (or set, whichever is the proper lingo) so i thought that i would do it over and try it once more and if it continues to smoke then i will just tear it down again and completely rebuild it 100%. all this cub does is pull a motorized bushhog and maybe a trip around my place. the clutch mechanism seems to be in tip top shape, with nothing out of the norm, can't be beat for a freebie cub!!! but again, i really appreciate your info and knowledge. thanks jeff
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