jim in oregon

First thing to do is write doen the carburetor number that's stamped on your original,,You can still buy the complete rebuild kit with that NUMBER as reference to insure you get the correct kit.
Finding someone local who knows how to do a proper rebuild and then do all the tweaking-setting properly to spec can be done..Some of the fine adjustments need done after installation and may involve ignition, timing, etc to get dead-nuts right..JIM