You are loosening, but not removing junk that the stylus is digging out. You need to get the gunk out before playing. Advanced stylus profiles get deeper into the grooves than the spherical and elliptical they were played with previously.
For ’normally dirty’ lps’ I’m thinking of trying a compact ultra-sonic clean/dry unit, waiting for some guidance from members here in another discussion
ultrasonic machine discussion here
Meanwhile, I aggressively scrub old dirty lps, mine from high school and college days, many given to me by friends when they got rid of their TT’s when CD’s took over, some purchased knowing they need a good bath, as long as no scratches. They go from unlistenable to an enjoyable listen, surprised me.
I add alcohol 91, and a few drops of jet dry rinse agent to the purchased mix in a small spray bottle, thus ’my mix’.
plastic lid from chinese soup container to protect the paper label.
vigorous, repeat vigorous scrub with baby scalp brush and my mix
manual spin machine is for rinse with distilled water, a pre-dry wipe with a cloth, into the 10 lp rack that comes with the spinner.
batches of 10 while listening, whistle while u work.
