Strangest Phono Sound I Ever Heard

First of all, Happy TG.  Yesterday, the strangest thing happened with my TT.  I have a Basis 2001 with a Transfiguration Orpheus, running to a Linn Linto.  I've had this setup for well over 7 years without any problems, although I did change the cart once.  So the other day I put on a record and I get this strange sound in the right speaker, almost like mistracking and it started happening consistently.  I checked all the connections and they were noiseless.  I even changed the input on my integrated amp, which works perfectly with my digital.  So I figure maybe the cartridge is messed up so I change the cartridge and when I am doing the alignment, I notice an excessive amount of anti-skate, even though I have it set to minimum.  So I take the counterweight off the anti-skate and it seems better.  I install the new cart and It is making the same mistracking sound in the right channel. Plus, I am getting a sound that sounds like a motorcycle speeding up and slowing down in the right speaker.  It is definitely not a 60-cycle hum.  It sounds like a recording of a motorcycle varying in speed.  I shook all the connections and nothing was loose.  The weirdest thing I've ever heard out of an audio system.  Any ideas?  Again, have a good holiday.