I can't remember the guy's name, but there was a guy (Josh?) who had a web page somewhere about "the camera foam project" or something like that. He had a nearly religious conviction about replacing light seal foam in old cameras, and loads of info on how to do it correctly. A google search on "camera foam light seals" turns up eBay auctions with loads of pictures and info. about doing this, and includes a kit with various sizes of foam and a couple of simple yet specailized tools for replacing lights seal foam. I'm not too sure if the Pauble Makina (excellent camera, BTW) is one which is specifically supported, but it might help. Anyway, it should be a do-it-yourself project. Good luck!