attached screen room

I have a Carefree with an Add-a-Room for winter camping. The trailer came from the mfg with the awning and I had the dealer "install" the add-a-room. It uses twist fittings (turn buttons?) which are mounted to the side of the trailer. I have metal siding and the dealer added most of the twist fittings where there was no existing wall framing under them. They could have added the fittings a few inches over to the side of where they installed them and adjusted the canopy material to suit, but never asked me. It would have been okay to have just done it since the panel would then only taper in at the top a little. As it was they also stripped half the screw holes in the sheet metal since apparently no one knew what a clutch was for on a drill driver so all the turn buttons wiggle since the screws are loose. They also tore off pieces of 1 inch putty tape and smeared a dab under each one and didn't even scrape away the excess blobs sticking out. If I had it to do all over again I would have also purchased the optional Snapless Side Upgrade Kit which does not even use the turn buttons and help the panels fit against the trailer wall better. It also looked like they used a machete to cut the piece that fits along the bottom of the trailer wall where it is supposed to fit around the steps. I like the Add-a-Room, but wish they knew how to install one properly. When I raised #@%$ about the job they did, all they did was refund me the installation fee.