jjmarotz,
Yours looks nicer than mine, I'm jealous!
I had to cut my hand crank tube so I could use the star gear at the end. And the support plate, to which I bolted the motor, wasn't square to the axis of the crank, so I had to weld in the 3/8 universal to keep the motor happy. I could switch back to hand crank by just welding the rest of the tube back on, but I hope it doesn't come to that.
As for the spout tilter, I got that linear actuator off of ebay. The original tilt adjustment was a simple piece of 1/4" bar stock with four holes in it that went between the two horns on the back of the spout and chute. To adjust the tilt, you pull the pin and select a different hole. I mounted the linear actuator so that the force of the snow would be pulling, rather than pushing on it. I don't know how much force that snow is going to have on the spout, but if my welded bolts break, or the linear actuator can't handle it, I can go back to the original set up. I hope it doesn't come to that, either.