Good Morning. I purchase a Toro Snowmaster 724 QXE about a year ago. The first time I used it, roughly 7 inches of wet snow, it performed perfectly. Ever since then it has had an idle issue. When starting it I put it on full choke and it fires right up. When it warms up a bit I generally slide the choke to the off position but then it starts this lumpy idle like it is going to cut out. If I place the choke in the middle position it seems to level out but then gets lumpy again after a while. This leads to me constantly fiddling with the choke to keep it running smoothly. I've only used it roughly five times because of our light winter last year and I find it hard to believe something has gone wrong that quickly. I haven't even hit the two hours of usage where the oil should be changed. Any advice would be appreciated. Thanks.