hello everyone I need some help with the linkage on the cruise control.I have been asked by a couple of friends to make them the cruise linkage.My problem is in the thread that goes through the cruise unit,the original thread is not a standard it is 1/4-32 standard thread now is 1/4-28, is the unit or coupling threaded or is it a clearance hole and you hold it in place with lock or jam nuts,if threaded can it be retapped to the standard thread 1/4-28.this is the rod with all the bends i n it that goes to the carb linkage. Thanks for your help here and this should get a few more car options back in working order