Yup, that's the plan... and I'm on the hunt for a old style action bar set
I have had two of the old and I deburred them, and rubbed every contact surface with some fine emery, then oiled them, and worked the heck out of them!
I got them so you could easily shuck them with one hand.
I've never had a mossberg flip a shell... I've experienced that with Remingtons, as has a friend. (and the 870's did jam a couple times... but my 500's NEVER jammed)
I find the answer to most shell issues is to cycle the action with some authority. I think a too slow cycle will cause problems with any pump.
As for cheap.... I go as cheap as I can!