I have a D130 with 50 hours on it. Recently every couple of starts it doesn't want to start at full power. It runs but not right. It seems to cut ok but i can I can also smell gas while cutting. I have had it to the dealer but they could not get it to reproduce what i had heard and smelled. Next time i cut the grass it will probably start just fine. I have drained all the fresh gas out of it and put in new with Seafoam (per the dealer recommendation), but no avail. Has anybody experiences this before? My neighbor has the same tractor and when running side by side you can clearly hear that mine is not running the same.