VPI HW 19 - replacing springs with pucks or cones


I have a VPI HW 19 turntable and have read in several places about a modification whereby the suspension springs are removed and replaced with sorbothane pucks or cones. Does anyone have experience with this modification? Opinions as to benefits vs. detriments? Most importantly, what size/brand/type of puck or cone works best? Thanks.
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Wntrmute2,
The "limbsaver" you refer to is that a product from the Sims Vibration Labs catalog? Which item?
Just a little note, but didn't the old VPI HW-19 Junior come stock with the sorbothene units installed at the factory? I believe they did and worked well as far as footfalls and vibrations. I had a couple of friends of mine who had the old AR turntables and you could not walk in the same room without skipping the record, and another friend who had the HW-19 Junior, and never had any problems with footfalls, although it is a difference in designs!