I had pretty much the same problem with a goodmark hood on my '69. When I brought the hood down the first time it would not close at all. I removed the catch from the support and inserted it by hand into the hood and it worked fine. I figured out that the angle of the opening on the hood was off by just a degree or so. Did a little bending and it worked fine. As far as not closing all the way, the catch does ratchet so if you push it down past the first click it will catch again. My body guy was pulling his hair out trying to adjust mine and when I gave it a push down and it caught he was supprised. He said he wasted a half of a day trying to get it right.