Thanks!
Got them pulled off today, along with all of the lights and most of the electrical from the back of the car. It's been an Amphicar-Centric memorial day weekend for me. Almost ready to send it off to the blaster.
Does anybody rebuild prop shafts? I know there is a special tool to prevent mushrooming that I don't have, as well as a fair bit of knowhow. Is it something worth learning to do myself, or one of those things that only happens during a restoration so better to leave it to the pro's?