I have a Beogram RX (radial-tracking) that my father-in-law stopped using.  It has two major problems:  (1) The suspension no longer seems to be isolating the subchassis, even with the transport screws unscrewed--the subchassis is floating, but if you tap on the plinth it audibly shakes the tonearm and platter; and (2) the antiskate is wacky:  Even with the arm balanced then the tracking force set at over 1 gram, the tonearm slides off the outside of any LP.  Any thoughts?

I checked the springs and they look fine; they are, er, springy, and have plenty of play.  I also checked and cleaned the stylus.  I still need a service manual.

(PS  Maybe this is my fault:  When I got it, the RX had some broken parts inside – the plastic blocks that hold down the dustcover springs -- so I removed the platter and put the transport screws into the transport position – locking down the subchassis – sand ecured the tonearm with a foam rubber block, then turned the turntable upside down and gently rocked it back and forth – quite a few times – to get the broken parts to fall out.  I think I may somehow have screwed it up that way, or maybe it was already broken.)

Any thoughts?  I'd send it out for repairs, but working RXs sell locally for around $50 on Craig's List, so it's nmot really worth paying for repairs.  Thanks.