Sorry , If this is ''off topic" Guys, I just don't know where else to source? I just sold a 1977 US spec Yamaha RD400 to a great guy , and It seems one of the OEM carb ''caps'' and ''slide'' and ''spring'' , had departed the project bike?? I need one or a whole right side RD400 carburetor complete to give to the guy, post sale. Any info. on where to source etc , Much Appreciated in Advance! thanks; dave in CA