A "stovepipe", in its classic sense, is an Ejection issue, not a Feeding issue to be fixed by any modification to the Feed Ramp.
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If the nose of the feeding round is hitting the Feed Ramp and the back end of the cartridge is being pushed down so that the round ends up more-vertical than usual, that is usually a magazine problem (weak spring).
My apologies.
This ends up with nose of the cartridge flat against the bottom of the flat barrel face and the back of the cartridge against the front of the bolt face. perfectly level. No issue extracting the old cartridge.
As I stated, I have 3 of these combo units, mags all work fine in the other 2 guns.