U-joint vs pot coupler

I already broke mine, but thank you! Mine was in there pretty darn tight, I was trying to squeeze the anchor lugs from inside the tube, but it was so brittle after 55 years it gave way. McMaster sells a 10-32 cap head screw with a 1/4" shoulder (part # 91223A215), very shallow, that will center/fill the 1/4" hole perfectly. The spacer is part # 91125A373.