Thanks! I've seen his numerous posts here and his generous offer to repair/exchange RCMs. I think I might try to play with it a bit first. Then if I give up I'll try contacting him. One thing that I can't do is easily compare it to the replacement I just received - the seller placed a bead of silicone sealant around the edge of the cover after doing the refurb and even though it would be trivial to cut through the sealant, I think I'm just going to leave it closed up.