I have used Devol bushes and Hard Chrome pins on My +4-4Str for many years and miles without problems. If I had to find a problem I would mention Devol's and Vesconite have a tendency get and retain road grit acting like a file on the KP's. I recently inspected the +4 and merely turned the KP's 180 degrees and washed the road grit out with carb cleaner. I personally like Vesconite as it is self lubricating. But I am geared up for this material and it is easy for Me to use it. If I were to start over, I would use MULFAB's bronze bushes and Chrome KP's. I would need to buy a suitable long reamer. They are very expensive. I do not think the cheaper adjustable reamer are up to a quality job. Or at least the one I am using for Vesconite is not. Actually if I used bronze I would have My Machinist do the job on His Sunnen Hone (Not Inexpensive).
