Random Skips

I have a Rega RP3 with Exact cartridge. Force and anti-skate set at 1.75. I clean with Spin Clean and Mofo cleaner and brush use #9 styles cleaner. I can play a album and it plays fine next time I play about mid way will skip or hang. Next time I play it it plays fine. Or I can even just stop put thru Spin Clean and it plays fine. My albums are not dirty take very good care of them. This happens to random albums new and albums I’ve had years. I do play very loud SPLnFFT shows 96 to 101 db’s. Have Source Technology 7211’s and two Source Technology sub’s. My room is 30 x15. Have thought it could be vibrations from playing so loud? I check the set up on turntable every 60 days and it’s always dead on. Any thoughts?