Replacing head on a Rk05j

A few extra notes on my original post: The reason I asked about changing the head pads was that there's someone on eBay selling the pads for $95 + extra for mounting. I hate the idea of sending out my head mounts just because I don't have a torque screwdriver calibrated in femto Newtons. Does any know of any other current source for head assemblies? The only ones I've found don't list prices on their webpages. Ditto for CE packs. "Quote" usually means "bend over". As for cigarette smoke, that was somewhat of a joke. However the heads do have thick black streaks, probably from that damn black foam. I tried for about 15 minutes to clean them up with chamois head swabs soaked in 99.9% isopropyl alcohol. I'll try to spend some more time + use a wooden tongue depressor later when I get some more time. Unfortunately the problem head is the top head. I really wish it could be buffed with a Dremel tool. Marc