This is how I modding the frame. (paint skills suck)
I used 5/8 to 1/2 reducer bushings and 5/8id washer that where 3/16". You have to open up the frame hole from 14mm (0.551") to 5/8". I used a step drill bit with 1/4" hex shank and ratchet...lol, both sides were done in less then 5 minutes.
Blue = frame
Black = front LCA bushing
Red = reducer bushings and 1/4" thick washer
White in center of bushing is the new smaller bolt hole (1/2")