Hi Steve

Is the FOX a ball bearing model or a plain bushing type? Does it have a very shiney case?  You may want to try Lew Woolard for the FOX.
As far as the OS engines go, have they been run? You will get a much better job done if these have not been worn.

There are many people who work on the OS engines
Leonard Neuman
Tom Dixon
Art Adamision
And myself are just as few.

There is also a large amount of aftermarket pieces made for teh OS and FOX engines,  such as Needle Valve assmeblies, low restrictionTube muffler, tongue muffler, etc.

Randyaero@msn.com


Regards
Randy