The rear belly tube was bent, and not in a good condition. It takes a lot of stress, since it has tree mounting holes in the rear, the engine/wing struts, the floats, and the lower boom tube that runs back to the tail wheel. I changed the tube, and inserted reinforcement aluminium tube all the way through the belly tube.
Jag är ett sätt att tänka.
Anders Aircraft & Automation 
Flink du er Anders 🙂 Så langt du har kommet, selv med alt annet du gjør utenom også 🙂