Ok well I got my 3/4" solid round.. I had measured the hole and it was 3/4.. so I thought, it was BARELY under 3/4... so i drilled the ca out the rest of the way so its 3/4" now, it was barely anything.. And i had to grind around the solid rod to make it smaller... it was a pain in the ass, but i fiannly got it to slide in.. it fits great on both ca's... And saturday my bddy is gonna machine the last 4" down to 9/16".. And I'm gonna order the bushings tonight