Cool. I'm in the process of "rescuing" a TT350 that was doomed to a similar fate. It shows just over 6000k's on the speedo but it wasn't given much respect in it's short life. It runs great now that I replaced the rotted carb inlets, disassembled and cleaned the carbs and removed the troublesome auto decomp from the head. Cams are as new and clearances are spot on. I also opened up the top of the airbox so the poor thing can breathe. I don't know how Yamaha expected the motor to breathe with 2 x 40mm holes as an airbox inlet
I picked up a cheap Staintune muffler and have grafted it onto the TT with a bit of cutting and welding. It looks and sounds heaps better than the heavy stock muffler.
Also had to replace the swingarm and linkage bearings....OUCH, nearly $500 for the parts! At least now there is no free play at all. Disassembled, cleaned and renewed the forks with fresh seals and 10wt oil.
I've put on some tyres and replaced the brake shoes and pads.....there's another $300
The wheel sets cleaned up great. As far as I can tell, the bike had only had 1 front tyre and 2 rears in it's life!
Now for a bit of a cosmetic once over, a new seat cover and the old jigger should be good for another 30 years.
Have fun with the XT Troy!