A lot of people like to dampen these older Thornes tables either on the interior of the wooden plinth or all over the inner metal spring board, and arm board, they use things like "Blue Tac" or that Dynamat stuff in car doors. It will kill the sound and rob the life out of the music. The best thing you can do is make sure the springs are working properly and lubricate them and if possible remove the deteriorating foam plugs in the springs. And have the table on a good non resonant level shelf. I own a TD160 and it has been semi-rewired (Morrow Audio pwr/ic from wiring block, stock tonearm wire to block) this really opened up the soundstage and added much needed detail. The biggest upgrade to the sound was putting a Grado Prestige wood body on the TP16 tone arm (match made in heaven).
Matt M
Matt M