Inner groove "Rumble"

Hi Pops.. First of all ... Thanks a lot for your compliment on my system.
No, I do not have another cartridge. The Exact 2 and RB-301 were bought together with the table. But I will follow your suggestion and try to adjust the anti-skate a bit. I'll keep you posted as to what happens.

phono preamp as it ages becomes more sensitive to styli or vinyl surface imperfections and passes rumble.

Marakantz, With much respect, your last statement is a doozy (not a Deusie). Can you say why that would be? Would you say that the converse is true: a new phono stage is less sensitive to rumble? I don't think so. But it does follow from your premise, which should indicate the premise is flawed.

Hi Lewm.....
As you requested up above, you can easily see my analog front end by clicking my system link. So, with all due respect, instead of telling us how Marakanetz's premise is flawed, can you please offer me some constructive advice as to what you may think about the problem I'm having. I would really appreciate your expertise. Thanks a lot.

..just a thought but the main bearing that holds the platter needs lubrication or replacement. That's what I would check first