Love my RP, it's solid, well balanced, quite high quality. But the battery door bugged me. It jiggles around when shut and has an obvious airgap around the perimeter. There is a zig zag fitment which should in theory resist water intrusion to some degree, but I decided to step it up with stuff laying around the house. $5 insulation foam tape from ebay for automotive use. There may be better materials but I've been using this stuff to seal my film camera doors. Works great. The door now closes tightly and feels really premium. No jiggles. And now has an extra barrier for water to get through should I accidentally spill a drink on a table or something.