Tried that without any results. I think that this is due to physical damage to records (remember, I bought them used and have no clue of how they were used before me).As I am going Hi-Fi, I decided to order the same albums (plus many others) on new vinyl, which I will take great care of from the very start. I did plan so earlier and was buying used vinyl just for trying it. New vinyl has always been in my mind and now I am even more serious about it.