Thanks for the comments guys! I have automotive type filler-rather thin stuff in a tube, don't know if that's compatible with epoxy resin or not. The cloth I used was 3" tape I've had for years and don't have a clue as to weight. It is a tight weave rather stiff, the thickness of what I've got now is heavier than the typical ABS cowls, etc. that comes in kits. If I use sanding and filler, then stiffen the inside at the hinge and a 'ledge' at the top and sides of the windscreen for closure that should be strong enough-shouldn't it?