I’m posting all types of questions on this rainy morning. I have a old (early 60s) Powermatic 141 14” BS I’ve been restoring all summer. Getting close to finishing…I’m looking to replace the upper guides- the bearings are definitely shot, but I’m open to other ideas (short of getting $160 Carter guides). Has anyone retrofitting old roller guides to accommodate guide blocks? I can’t seem to find info on aftermarket guides that would fit this saw. Any advice appreciated.