Just got an SR80, and is thinking of modding them. Already quarter modded the sennheiser 414 pads. The sound is clearer, but the comfort left a lot to be desired.
I found these on ebay: http://www.ebay.ca/itm/Leather-Ear-Cushion-Pads-AKG-K-26P-K-414P-K26P-K414P-K-26-P-K414-P-Headphone-/180841097459?pt=Other_MP3_Player_Accessories&hash=item2a1af828f3#ht_4445wt_993
The outer diameter is 52mm, and the inner diameter is 50mm. I believe the Grado SR80s are about 58mm outside diameter, so it would be a real stretch to put them in, but has anybody tried? I figured I could stretch these out a little.
Thinking of damping these with dynamat and some silverstone phones. Probably not going to recable these, as that mod is quite expensive, and I have never had good experiences changing out cables.