Mr. Pipercub

I will use the toothpicks. It does make since on what you said about maintaining the over all strength of the 3/8"' plywood firewall. I do thank you for you help.

I will be posting more pic's tomorrow on how it is coming. I did move the engine up an inch on the firewall. The wing is coming out fine and I should be ready to cover it this coming week if things keep going as good as they have.

Thanks