Originally Posted by N130Gv2

The only thing that I would add for calculating port is to subtract wood thickness from port length. This also effects overall Vb. So when you remove the wood thickness from port length you have .158 for a port displacement. Using .25 as the material thickness.

Again MTA thanks for the schooling.... lol I guess this is why people should use pen and paper vs programs. There's no presets with a paper and pen. lol