Thanks for the info lads, especially Gary. I should not have even mentioned the Kangaroo in the same query as the KINGCAT. The Roo requires UPthrust on the engine otherwise when you give it the throttle the nose goes down,unlike both of my Hotspots which have no such bad habits and require neither up nor down thrust. I know very well that the Kingcat is an extremely well sorted plane as designed.Iam just an inquisitive cuss and would like to know the real reason for all that downthrust. It would not stop me buying one but I can hear all the queries at the field already and I would like to be in a position to answer! Of course I have not discounted the fact that I may not understand the (aerodynamic) reason when explained !!!!!!!. Thanks. Paul.