Mowing a customers yard yesterday, my Grasshopper with a 27 horse Kohler quit right in the middle of the yard. After hauling it to the shop, mechanics say it dropped the camshaft! ...at 850 hours!!! Rebuild...$1400 New motor...$2700 My brother-in-law who has rebuilt a few says he will help me for free...all I have to do is buy the parts. Anybody else have this happen and how much am I looking at?