ok, one more question.
I have some holes in the bottom of the fuse under where the fuel tank will be. The covering will cover these up. Do i still need to stick some balsa in them?

BTW Reconstruction has began. The firewall is drying right now of the wood glue and the bottom of the fuse is being glued back. I will probably take her to the field this weekend and see if one of the experienced guys there will take her up.