I guess I'm just tired. Tomorrow I'll go at it again. What I'm trying to do is, put a larger engine on my trainer. When I tired to put the mag 46 on after I took the O.S. off, I found it was a tad to small. I took all the screw out and widened out the mount. Everytime I try to put the mount back on the firewall; the mount gets smaller.[:@] I will try to put some CA to hold it in place. I think I'll go to the hardware store and pick up some wood to make a new wall. The plane I'm trying to put the mount on is a spad Debonair. I don't know how we got it on there the first place.. The mount was given to me and so it don't come with a template of any kind.