I would say your best bet is to become your own mechanic. Buy a couple of manuals for parts and repair and buy some tools and fix whatever is broken. If you get parts from a reputable source (like Len Sheaffer or the like) they can also likely help diagnose your problems and recommend fixes - that has been my experience. The main benefit is you get the fun of learning how to work on tractors, get to buy cool tools and manuals, and likely will save quite a bit of money instead of paying a mechanic to fix your tractor. These tractors are very simple machines to work on, and not threatening in their size. There is no reason why the average person with simple hand tools and a couple of manuals cannot do all of their tractor maintenance and repair, up to and including engine/transmission overhaul (although in the case of the transmission, you would probably be money ahead to purchase a complete unit off of a junk tractor, if it could be found). Good luck.