Help with happijac bed lift

I have a new fuzion with the happijac beds in the garage and am having problems with one of the supports on the lower bunk not being the same height as the other three. The bed raises and lowers but the one track skips and jumps while doing so. The chain isn't as tight in that track either. In the process of raising and lowering while trying to trouble shoot the piece inside the bottom of the track that the chain is attached to got bent. I also found that the horizontal chain going to the vertical one has slack in it too. I called happijac today and they are closed till Wednesday. No clue what caused this or how to fix it but just replacing the bent bracket won't be enough to put tension back on the chain. Any help at all from you guys would be great ! Thanks in advance, Jeff