An interesting topic came up between Shotgun Dave, myself and Zulch today WRT my 'Goonerized' ASM Walker. Mainly, the fact my original cylinder has a 'pressure ring' rolled in (the line visible in the pic below in between the engraving and the cylinder stop ovals):
Mike mentioned that he has seen this pressure ridge in photos of original Walkers, but never "in person" until mine.
Do any of you Walker owners have cylinders with this pressure ridge, or have any info about them you could share?