cats squirrel wrote:not sure rubber dries out? After its heated and vulcanised, there can't be any water in it, can there? Years of deformation has probably taken its toll on the integrity, pulling bonds apart.
Rubber can dry out. Rubber and plastics use a very large number of chemicals to produce the desired finished product. These plasticizers as many are called are chemicals that can evaporate from the finished product. This is the reason padded dash boards in cars eventually crack and become brittle.
I use a Discwasher SC-2 with a drop of D fluid on one side and drag the stylus tip through the wet side of the pad into the dry side of the pad for regular cleanings. This gets the crap off the part of the diamond that is actually in the groove. For getting the cartridge clean, I use one of the long (1") bristle brushes that come with cartridges occasionally.
I have not started using plastic/rubber anti-aging compounds common in the automotive detailing business as I don't feel using armor-all or that type product is good for the stylus/suspension.