Anybody got any experience with these and the Samson SR850:   http://www.ebay.com/itm/Velour-replacement-Cushion-for-K240-K240S-K240-Studio-K240-MKII-Headphones-/251290172964?pt=US_Replacement_Parts_Tools&hash=item3a820fbe24   Have just ordered a pair of SR850s and now I am looking for...