I also have 325i and SR-80. Not a "Gradolover" by any means. Rather, they are a TYPE of useful transducer that fills the gap others IME** can't quite nail ...  e.g., the highly accurate and detailed midrange, that pace n' rhythm/dynamics/acceleration/snappiness thang, etc. (tho' not much).

** Haven't tried the V-Moda's. But I have a feeling they will out-do the Grados WRT speed and snap.

On pads ...the TTVJ flats reminds me of that mostly-useless Starving-Student socks mod that some-effin'-how got hyped on Head-effin'-Fi and Inner-effin'-Fidelity (free + gossip-driven + unexamined + non-fact-checked content seems to get priority on the Net! Anything that AdSense and PPC ads can use is fair play ... luv that easy $$$. eff the scientific method!! eff U!!!!) ...same philosophy WRT decreasing the ear-transducer distance.

Tylll/IF noted the taped L-cushions being subjectively best, at least for the 225's:
http://www.innerfidelity.com/content/evaluation-grado-stock-and-modified-ear-pads-page-3

My HP-1 and SR-80 were orig purch'd in 1993. Dunno if current Grado L-cushions have the same dimensions and material composition as origs. Methinks that waveguide has become a bit more conic for the latest batch???
I don't think there is such a thing as NOS pads ... even if NEVER used, THAT TYPE of foam has a certain "half-life". What I can't figure out is what exactly causes this TYPE of FOAM to rot (have experienced same thing with other manuf's cans as well as Sonex sound panels). I live in an environ. unpolluted & dry -- a region of the U.S. SW. And this rot occurs at about the same pace as when I lived in the US MidWest.