I have a 71 corvette with a 383 stroker motor when I hooked up the Holley 650 double pumper carburator linkage. With the rotchest linkage bracket it did not line up well , I had to bend it a little an it is still not wright. When I push the gas pedal down to the floor the carburator is not fully open all the way. I have the stock throttle cable .and all the holley replacement brackets seem to require a cable with square plastic section that fitts in to the bracket. Has any one else experienced this problem?