It will never shift right if you don't get the TVcable PERFECT.
The length of throw measured from the center of the throttle shaft to the cable attach point needs to be exact..... most speed shops sell a MrGasket or B&M carb adapter to do this.

John Kennedy
1950 Chevy Burb
1929 Ford Model A sedan
and whatever else rolls into the yard........
http://home.joimail.com/~kennedyjp/