First off, I haven't posted since I started grinding stumps..but I do read this forum quite often. I had some bad luck with my grinder the other day. I was about 3 min. into a job when I heard some strange noise coming from my machine. Quickly I shut the machine down. Some smoke came whisping out of the housing where the belts are. I broke something...*$#@ ! I proceeded to remove the protective covers...and sure enough...the bearings on the clutch were fried! I called my dealer, he in turn called Rayco. They both seemed well aware of this problem. It must be a common one. So...wouldn't't you know....my warranty just was up! Rayco did a surprising thing, they sent out all replacement parts, free. $450 worth! I was impressed. Has this happened to anyone else? I just wanted to put this out there in case it does happen to anyone else. Anyway, this stump grinding gig is working out great for me. Its a great part time job. Thanks for the tips you all gave when I first started. Be safe!