How tight does the fit need to be for a good glue up with Unibond 800? I have my ipe prepped, and the bamboo is shaped, hand planed, and sanded. When I put the two together, they are very close, but there are a couple tiny gaps along the length. Not enough to see through, but the bamboo isn't perfectly flat like the ipe is. Since Unibond is gap filling, how close is good enough? Been working on trying to sand and hand plane, but I'm only getting marginally closer to perfect, and I'm not sure I can get the bamboo much flatter.