the standard bushing type bearing is a different size than the roller. You can not replace the Bushing with a roller. They are a different sizes. Besides,, A bushing can be more reliable than a roller if the proper material is used. You can replace the roller bearing with a solid. But not the other way around. If it were me, and I had problems with too soft a solid bearing, I would consider looking for a harder material and replace the solid with a harder material...Now that all said........... It seems to me that I remember a guy that was selling replacement rollers for those that had bushing. Not sure where he got them. Not sure the guy is still around. It may be that he was able to spec some rollers that fit. Not sure.. o well.. Thats the latest as I know it. Enjoy the ride...
