Well finally after too much time having the kit I've installed the bearings. Funny thing, I didn't want to open the machine and unscrew the tape guide posts. So I first thought of trying a tap handle, but it is only for a square shank. Then the brainstorm blew in. I grabbed my 1/2" drill. Chucked the left post up, hand tightened it and hit reverse. BINGO! everything but the base section unscrewed together. This worked for all three, easy as pie. :-) Still having the guides I took apart above made the job easier yet. All i had to do was load the spacer, bearing, spacer, bearing, spacer onto the screw and assemble it back to the base of the guide still on the machine. Wish I took pix. *thumbsup*