I'm struggling with two of mine right now. My pin is doing what your pewter is doing except that I don't have mice so I've been scenting rats with dirty mouse bedding from Petsmart. That worked initially and he took a few rats no problem. Now he's back to being stubborn and the last scented rat I offered him he struck, constricted, and then left it there. My BEL hasn't eaten for me yet. I'm going to keep offering but I won't be able to order rodents until May so until then I'll just keep offering rats. I may run down to Petco, though, and buy a mouse for each of them just to get them eating again. Sometimes if they get on a good feeding streak they'll forget that they don't like rats.