Yep, DS, I agree with your findings. Many of those scratches become catch basins for the dirt and crap that cause ticks or pops when the come 'round to meet the stylus. Blast that gunk out with steam and it is surprising how much extraneous noise is gone.
As far as using tougher cleaners, I've not found a need to go beyond an alcohol-based cleaner which I use right after a steaming, while the moisture is still on the LP. I vacuum this up after some light scrubbing and then follow with a good rinse with high purity water. I'm finding that any clicks or pops beyond this are most likely damage.
As far as using tougher cleaners, I've not found a need to go beyond an alcohol-based cleaner which I use right after a steaming, while the moisture is still on the LP. I vacuum this up after some light scrubbing and then follow with a good rinse with high purity water. I'm finding that any clicks or pops beyond this are most likely damage.