'32 Cowl Reshaping

[NSRA905]

I have a Downs fiberglass '32 body and just received a 3" chopped windshield frame and stanchions from Lobeck---the fit is terrible! The frame is about 5/8" above the eyebrow in the center which is way too much for the seal to do it's job and this is kinda cheating by mounting the lower stanchions alittle low at the ends of the eyebrow. I'd like to re-shape the eyebrow and cowl so the windshield fit's properly. I think if I used that much body filler it would possibly crack and I hate the thought of using fiberglass mat and resin, mainly, because of the mess. I have heard there is body filler with fiberglass strands in it that is much stronger--would this be the right thing to use or does anyone have any other suggestions?? I'm going to try to attach a photo to this--sorry if I mess up! Thanks, Bruce