I've followed the procedure in Tech Tips with the 4 inch block, etc. Repeated over and over and spent hours trying to get it right but still not to satisfaction. It all works with good fit, good gap and I'm really happy till the last step. When I hook up the hold up supports, one side kicks out. If I re-adjust the hinges to make it fit the other side kicks out. Never a problem at the top. I'm thinking it all to do with the hinges causing a twist or something, but so far no luck. Any ideas ???