I'm in a pickle. I'm framing several signed jerseys for a client, and was given one in particular that had already been mounted by a different frame shop. I do my stretching and my sleeves a certain way, and the client wanted them all to match, so he gave me this one to re-mount and put back in the frame. Upon taking the thing apart, I saw that it had been mounted almost entirely with a very sticky ATG tape. It held the jersey down to the matboard, and it held the sleeves down to the front of the jersey. The way he wants the sleeves done will leave the ATG exposed, so I carefully removed them with adhesive remover. I got all the adhesive off, but it left behind grey stain in the fabric that I can't seem to get rid of. Does anyone have suggestions? So far I've tried rubbing alcohol, denatured alcohol, good old soap and water, and a Tide To Go pen, none of which have worked.