My 68' Twin has a floating 1/2 floating baffle in it. When the original particle board baffle disinigrated I built a new one(w/1/4 edge) to replace it. Question is I used finish grade ply and not baltic birch so I'm certain the wood is a bit softer. Should there be any issues with this? tonally? I cannot find baltic birch anywhere in my area.. The cab resonates nicely. It's no big deal to knock out another as i pretty comfortable with this kind of thing.