Happy to help David. Seagull is right. That Tsunami tip rib is VERY thin isn't it. I was going to glue the firewall in yesterday. Had it all set up, but had trouble controlling the fuselage side flex up front (more flex on one side than the other), and it cracked the built up former at the top, where it's essentially 1/4" sq. I had to pull the firewall out before the epoxy set to rethink the process. Going to try a temporary lateral support piece where the crack occurred. This seems like it should work on a trial fit. Does that sound reasonable or should I put the 1/4" triangular support in early, or both, or something else? Maybe the 1/16" ply fuselage side doublers worked against me here?

Greg