Hi guys,
For what its worth, I bought new rollers, which are for my 46' Convertible with a sliding door, on a two brass, above and below track system, from Sam's. I also bought the 8' of brass tack, the removal of the door was simple, 8 screws and then the door almost fully closed jumps out with a little persuasion. The wood door has two wheel carriages on the top and bottom. The bottom were totally shot, elongated and cracked and broken. I bought two sets from Sam, just in case, and found the tops ok. The only reason I did not replace them at the same time is the scews fastening them to the bottom of the door were difficulut to get out. Robertson screws are the best, yet all screws after 18 years are going to be stubborn. So a nice few taps of persuasion with a correct bit and hammer will loosen them from the age griphold. Once replaced the new trick is getting the door back in. Since the height is now changed due to the new wheels. The easiest way I found was to unscrew the TOP track and remove it, put the door inplace bottom in track and position top of door where it should be. Next slide top brass track back over the door wheels and rescrew back into place. I can tell you after prying to try and get the wheels to slide in up top is not the way. Especially, after 5 coats of Epiphanes. Good luck hope this helps. By the way the door now sits staight, slides smoothe, and locks accordingly. Nice!!
Tim