Tapping solution?

Having taken the prop shaft off the boat and put it on a lathe to check if it's bent, we discover it isn't bent! Discussing with others in the marina we decide to proceed with something we had thought about some time ago, and that is fitting an Aqadrive.

We need to go back in the water on 6 November, and Richard is off to the UK for two weeks... so it's a hard push this week to get as much done as possible and then leave Tim and Jacob to finish off. With a little bit of luck it should be possible!