Sorry for the delay guys, I need to work on this soon to get it put back together. Been too busy working, plus my thumb still has a nasty blood blister, ouch! sorry, I had to back away for a while...maybe tomorrow. The extension tube is still intact, except for the bearing in the lower end of the tube. The main tube was disassembled. I think the problem is the several rivets and how the bearings lock?? onto the rivets. When you try and retract the extension tube, about a foot, 12", shaft at the saw end will not retract.