My friend and I are building him a Jango suit but have had to put it on hold since we both returned to school. All the stuff is being stored at my place, and I just discovered the helmet has a sizable crack along the top of the cheekplate, right below the left edge of the visor opening (the visor hasn't been installed yet). Is there any way to reinforce this spot? Should I try sealing the crack with Bondo? The helmet is coldcast and we paid a lot for it. I don't want all our work sanding and painting to go to waste.