Record Weight "Inner Groove Distortion"

For many years, I was a record weight deny-er.  Then I started experimenting with the record weight that is part of the Kenwood L07D "system", made back in the day by Kenwood for the L07D.  Weighs about 4 lbs.  I don't think there's anything special about the materials used, and in fact I am no believer in magical hardwoods or things of that sort.  However, the Kenwood weight cleans up the sound on any of my record players, including the L07D.  If anything, I would expect a weight to have most effect on the outer grooves, but no, I hear no inner groove problem.  What would be the mechanism for what you think you hear?
Thanks.

thegoldenear: while I believe your TT needs to be disclosed in the context of this thread, I've had more realized results with weights since my TT/arm has improved over the years. I've noticed no inner/outer distortion with any weights I've used, mostly increased listening pleasure within my current system. I would think that sort of issue would be the caused by set-up?