Sorry about the comments Mark, it's all in fun man! We mean no harm...
About where to get better syncro's... Get in touch with Terry Haines. That is the best I can tell you. He upgrades MTX-75s to Euro Spec a good bit and as far as I know, that would be from talking to people here that have a MTX rebuilt this way, it is about as built proof as they come. At least in the realm of the MTX-75. Terry might be able to sell you the syncro's that you want.
Good luck and hope you can get all this sorted out as painlessly as possible.
Oh! How do you get in touch with Terry... I don't know! Maybe someone will be nice enough to post his e-mail or phone number here again, but you could do a search as well because there are people asking this question all the time.
Good luck again!