Thanks for the info. The plane is in the Bones now. Just finishing up the Pod. Have not installed any electronics yet. Still thinking about the pull-pull system on the rudder and elevator. I will scrap the flaps. It is heavy because it is all ply-wood. The kit plans show a OS 120. So I would think the Mag. 180 4s would be about the same. Maybe I will fly it off the snow like I do some of the other ones on floats. SeaDancer handles the snow great.