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Just try some HPs & see if they'll function.
Make it simple.
If they do, no need to mess with the ramp.
If they don't, hand polishing the ramp will probably not accomplish a thing.
The danger in polishing by those who don't understand the design lies in altering angles, as Dahermit says.
The problem, IF JHPs don't cycle, may be in throating or magazines.
Denis
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