Back glass install frustration

Never would have got those corners if we had not started at the bottom. Have someone push in a little on the corners as the rope pulls the gasket in.

Is anyone actually reading my posts? :( I DID all those things, and it DIDN'T work, in ONE CORNER. :BangHead:

The question is, should I take the time/effort to try and "pick" the gasket in that corner, or remove it and start all over again? Which is less likely to result in a damaged gasket (or worse, broken glass)?