As you may have seen I'm restoring my 5m. Its back from paint and assembly is progressing well, except for the windscreen...

The windscreen just wont fit. We have tried 6 times now, 2 sets of fitters.
A quick back story...
The screen is not the original. This was broken due to an overnight rodent related incident in the workshop.
A replacement was sourced.
The seal is new (old stock), very good condition, soft.
It appears to be the correct rubber the metal trim fits perfectly.
The seal fits on the screen.
The screen wont fit in the hole. It appears to be slightly too tall.
Are there different sized screens?
Screen is 64cm across the middle.
Hole is just under 66cms.