i just received a pair of side saddle panniers from the dealer, and i'm not seeing how to install them. they came with no instructions, just 2 bags and 2 small sets of screws. i see how the top hole attahces to the bike using the release lever. but where do the screws attach? it almost seems like i'm missing some hardware...i'd think there would be a substantial mounting to the luggage rack somewhere. also, when i open the bag, i can't see how to get inside.....there's just a gray cloth but no opening into the luggage....help!