Hey IYA, give Anderson a ring about your premature
ejection problems... I hear he has similar issues.
Butt seriously folks... I was wondering how the spring was going to handle the initial thrust of the shaft being let loose, G forces and all. You might try using a wide piece of rubber band to hold the back end of the tip to the adapter as a coupler. It kinda ruins the sleekness factor, but the fish might have bigger issues with you if it works. How's that MT0 like a 3/8 shaft?
sven