Thanks everyone for the kind comments - this project was thought out at the beginning to be one that could be easily stored, easily built, and for everyone to try.
So, there are still kinks to work out and new things to try. Sometimes, those new things mess it up (like my main axle - I added two 1/2" connectors thinking it would be easier to dis-assemble - it just messed up the movement I think).
I sort of figured out how to mount the motor (it works but still needs refinement).
So add another 2 each 3/4" tee connectors (one on each side to keep things even). Another 1/2" to 3/4" adapter and a 1/2" 90 degree connector.