I had same problem and screen did not fit into the strip at the top. Williams solved it. They cut the upperhalf loose from the windscreen pillar and inserted double sided black tape, filling up the gap, and glueing back together. When doing this you need a very sharp knife and a steady hand. Note the bond between pillar an rubber strip is very firm, so cutting it loose is safer than tearing it off.
Cheers,
Bert


2025 Plus Six - 1909
2009 Roadster
1983 4/4 4str
Board member Morgan Sports Car Club Holland ('21)