RE: Ultra Sport 40 - Sport Jett 60LX
been there, done that. bob is right. forget the flaps and for sure go w/ the bubbless tank. even with a lot of foam i had bubble problems. i also put my elevator, and rudder servo at the rear of the plane. it is a nose heavy plane. ca everything in reach. never had a flutter problem w/ the stock hardware. might want to glass the wing together. i did `use a 1/4" muffler ext to clear the fuselage. also used a thin piece of foam behind the remote needle. been flying this combo for about 2 years. nice combo and different.