I am just getting ready to put the engine (O.S. 50 SX) on my 40 size Kyosho Cap. The "Supplementary Instructions" call for moving the centerline down 3/16" and adding 2 #6 washers to the lower mount rail yielding 2 degrees of upward thrust.

Has anyone flown with the upward thrust? Is this to keep it from pulling to the belly on verticals?

Any recommendations?

Also, I was planing on using a Dubro pull-pull rudder kit. Anyone tried this?

Thanks,

-Michael