Replacement adhesive for inner panel to hood blobs?

[njsteve]

I recently found a really nice Trans Am hood for my '75 Bird. It appears to have been media blasted on the underside. The metal is pristine but the blobs of adhesive that are supposed to support the space between the internal bracing and the outer skin are missing in a lot of spots now. Someone had tried using cheapo, hardware store, spray-foam insulation and that is just useless. I have scraped most of it away.

Anyone have any suggestions on what type of adhesive could be used to inject into the spots again to remake the supporting "blobs" that should be there? It needs to be something that keeps its form while hardening and stays in that one spot.