hello all ,I've been away from the project for a while. now that summer is here I'm buried in other work .i left off painting my top frame and was wondering if the rear frame bow (the one that sits in the rear gutter)has a replaceable tack strip available? mine had a very crumbly cardboard like tack strip that cannot be used .i cleaned it out of the channel but see no way of attaching a replacement strip.it looks as is the original is crimped in .any thoughts ?thanks