I did a lot of what has been mentioned here. The inner tube is a good idea. I did not use bees wax on the wood. The cab has wood mounting rails. I'll do that on the next build. I used a lot of the rubber biscuits that Bob Drake sells to mount a lot of stuff. I think some of my issues may be self induced. I am a close tolerance guy, due to being the QC Manager of a Flight Program, so all of the gauges etc. had a press fit. Looking back, I should have left 1/8" of clearance. Live and learn.