Anybody know how to get air lines off brass nipples (connections to cylinders/tee's/restrictors) without sliting them and creating a scratch on the nipple? The newer type air lines like BV sells are very robust and I have a heck of a time getting them off without cutting them. The resulting scratch will frequently leak air when I reconnect the line. The problem is compounded when the connection is difficult to reach inside the plane.

I mention this because sometimes when I am trouble shooting leaks, I create additional problems by disconnecting and reconnecting air lines.

Craig