why would you do a dual guide?
just use one guide and one shim in the size needed.
measuring the size is pretty salty tho.
i let the work do by a person that made himself the measuring tool with a cnc machine. its basically a solid hydraulic lifter copy with the ability to mount this pressure measure clock thing. the problem is it never fits 100% tight so you have to constantly push it a bit to the shim points.
