About 18 months ago I replaced all my Beatles and Stones UK pressings with VRP sleeves. When I went to play one Saturday I noticed that the side of the album that was facing the inner side of the sleeve (the side of the sleeve with paper in it), had a film on the record. This was similar to when the old plastic sleeves leached into the vinyl. However a run through the VPI machine with distilled water removed it. I started checking all my LP that I put the sleeves on after that and the sleeves did it on most of the lp that I used them on. But now here is the strange thing, it only affected mid to late seventies UK pressings. So obviously their is something in the vinyl formulations being used in the UK at the time that the VRP sleeve reacts with. I my case it simply wiped off the records, maybe I was just lucky and caught it in time. Rick from Red Trumpet warned me that he also had problems with these sleeves but like a fool I didn't heed his word. So beware!