Thanks for the advise. It is my opinion all birds look better in the air with their legs up, however I agree retracts are more pain then perhaps they are worth. Yesterday, one of our jet flyers made a some what rough landing with his jet and the nose gear collapsed. Tore out the front former in the figerglass fuse. Going to be rough to repair. These are really top of the line, expensive systerms. What happened is somewhere along the way a small screw fell out which caused the collapse of the nose gear. I like you have tried air up/down, air up/spring down, manuel but none are really worth the trouble. I am about to start a new war bird with rotating Robarts. Hopefully some of the learning so far will be cause to make the installation and maintenance better. My try the plumber tape idea to help the 0-rings.