Thanks for the info, I am going to use the BLS173s on the slats, BLS 172s on the on flaps, BLS177a on stabs and BLS175s on everything else. Im doing a Sbus setup like my F-15, my only beef with futaba right now is the lack of a good 300ish Sbus servo. I think with a single servo running the flaps have a higher torq will be easier on the servo and due to the extreme loads on the servo mounts for the stabs I opted for the metal top half of the servo with the 177s.