Looks like an obvious case of they don't ck the application, or run their own stuff. That has always been an issue tho, even with the steel yokes, if ya don't turn em down, they're gonna rub, I go so far as to pack some grease inside the tube right there, because even if you do clearance it, and get things in a bind, it's still gonna rub a little. I have also gone to the big ball, but you still need to clearance the yoke, and tube, if you can find someone with a lathe with a big enough hole thru the spindle, just bore the inside out about 5" deep, there is enough wall thickness in that area, to not worry, even if you only take out .060 on each side, that will help. Think you can also buy "thin wall" tubes, but I'm not sure I'd trust one. JMHO. Bob