Thanks so much for doing this!
You are welcome.
Have my version about ready to go. I put a wrap of carbon fiber around the middle in order to seal a gap between the motor tubes and 3d printed body part.
George, thanks for the tip about thrust rings inside the 18 mm motor tubes. Will do that. Also put some dog barf in as
I'm thinking the faucet riser is sort of floppy. I hope it doesn't result in too much drag. Would be nice to design some sort of a flap, instead of having to have a tube all the way through. Of course a flap would introduce friction as wel.