Tried to fly my NP 260 yesterday. Lucky for me it wouldnt run. I say lucky caus when I took the cowel off to investigate the plumbing I found the firewall was not glued properly, and was comeing off. I have reglued it and installed 3/4x 1/16 aluminum angle stock to reenforce. Corrected regulator problem with engine (YS 63) and will fly this week.