I am thinking of replacing my P/G bender mechanism. I'd like a lighter, easier and smoother bender action. Has anyone compared all 3? My options are: 1] retrofit a P/W using the P/G string tower [the standard P/W puller knob will not line up w/ the existing hole] 2] retrofit a glaser and use a plastic to cover back rout. 3] add a longer spring to existing P/W [will make easier, but no weight reduction]. Please advise.