I don't use revolvers, but do have some homemade double shackles (unfold like revolvers, just don't twist). I've never had any of the side effects heard mentioned about revolvers and they've work just fine for me...

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these happen to be made from my original Calmini lift shackles and a stock chevy style shackle that will slide right into it. this setup kept me from having to relocate my rear shackle mount when I changed out to 56" chevy springs in the rear.

-Rob