@Hai-Lee I hear you saying that the elevator is a big part of my issue? It's an easy fix.
I found that it was responsive when I got it in the air the once.
I still have the first one on the shelf in my bathroom for a Bouyancy test. maybe I do a single engine test.. tape the ailerons straight. and make it 3-channel. ditch the pontoons, and the tower...
Either way I need to ruminate. The sting if failure still smarts.
Besides, I am still working finishing some other projects right this moment, but I have this as my pet project for sure