Tim, I'll take you up on that offer. I'm going to be in Florida for a week (Whoopee! A week away from winter!), so when I get back, I'll give you a call. I think I still have your number from a previous e-mail.
SW, I still have the holes in the door from the original retainers, which I'm re-using. To do so, I'd really have to squash down the weatherstripping. Maybe I'll drill new holes to avoid that. Thanks for the idea!