Refreshing 10 year old Spica TC 60s

Recently aquired mint Spica tc 60s. Sound beautiful but a little tired? Any suggestions?
There is a Yahoo group dedicated to Spica owners. Log on to Yahoo and under "Groups" you should be able to find it. These guys are obsessed! I also have a 10 year old pair of TC-60's. For some reason most of the threads are about the TC-50's (more of a cult thing I think).

Good luck.