Heat Box – straightening out fiberglass?

I'm now in the middle of rebuilding my heat box and I notice that the front of the passenger side fresh air box is caved in more than 1/4" - looks like the support rod was torqued up pretty tight and the strain on the bracket has made the door - side of the box quite concave.

I'm wondering if gently 'warming up' the fiberglass with a hair dryer or very carefully with a heat gun would soften it up enough to flatten it out? Don't want to try this for fear of it turning to dust or something before running it fast FABO.

Your thoughts are welcomed, as always.

Thanks, Larry

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Author: admin