I am trying to rebuild a 1966 Ford 3000 gas tractor, 3 cylinder, and it looks as if I may have to replace the original Holley carburetor (tractor will not start and fuel pours from float area). Upon disassembly the needle is worn. Carburetor looks like it has never been rebuilt. I have heard good things about the Zenith, but when I went to order it I was informed that there was a cable linkage to the throttle (if I understood correctly), while my old Holley has a ball linkage. Furthermore the Zenith has a ball linkage on the choke and my Holley has a cable. The linkages seem to be turned around from what I currently have (Holley No. 12R-3589B ; LIST 3655). Has anyone else seen a similar problem converting from Holley --> Zenith. If there is a difference in the linkages, how difficult is the work around? Thanks.