Technics 205 suspension

The Technics series 205 have suspension problem. One would think that exchanging the 'rubber ring' will solve the problem. Deed anyone try and where?
Your Excellency,

My neighbor Andy ( who cartridge repair business is only 487 miles from my door, does excellent repair work. I have just received word from him that he has been successful in the repair of one of the 205C MK 3's.