Problems with my 129... After a few minutes it starts smoking out of the oil check/fill port. It started doing this earlier in the season, after a while it seemed like it started loosing power, then I would notice the smoke. Thought maybe it was overheating because the muffler was coming apart and hot exhaust was being blown onto the carb and air breather which would be to hot to touch. So I switched to the other mower and put order in for a new muffler. Well just got it on, and first time out everything seemed fine but after just a few minutes (maybe 5) it started smoking out the oil fill again. I did not continue to drive it more but everything else felt fine, no smoke out the exhaust and ran seemingly like a top. Looking for some advice, as my 1000's clutch went out just today and I have no mowers and a month tall grass!