Chris, its possible the copy you bought was played by its previous owner who had a table and cart that did not track well, adn likely damaged the grooves. If that is the case, then your best bet is to look for another copy.
One thing you can try is to take your record cleaning solution and cut it 50% with Distilled water. Mix it well and let it soak for a few hours on the offending side. You'll have to come back every 10 min to add more fluid to keep the surface wet. After an hour or two of this use your VPI or nitty gritty to vacuum off the fluid. Let the record sit flat for a few days, then give it a play. This process will remove the junk from the groove walls that has been ground in, and may reduce the distortion somewhat. If you are referring to the Ansermet performance on London, I have the same London LP, and do not have the distortion issues mentioned.
Best
J
One thing you can try is to take your record cleaning solution and cut it 50% with Distilled water. Mix it well and let it soak for a few hours on the offending side. You'll have to come back every 10 min to add more fluid to keep the surface wet. After an hour or two of this use your VPI or nitty gritty to vacuum off the fluid. Let the record sit flat for a few days, then give it a play. This process will remove the junk from the groove walls that has been ground in, and may reduce the distortion somewhat. If you are referring to the Ansermet performance on London, I have the same London LP, and do not have the distortion issues mentioned.
Best
J