Gents, 'Got mail last night from the owner of the heavy sheffield that had my eyeballs changing sockets. It sounds like the much sought-after feedback is short-lived, and now mostly gone. Sigh. So maybe I am destined to be estranged from the heavy Sheffields for life. 'Even picked up a handsome one this wkend, hoping it would join the esteemed ranks of Pinklather's rotation. I'll repeat the process on this one - just to see how long the feedback lasts. It made the sheffield tolerable for me, and got a number of silent soligens to find their tongue.