Yank that screen off. It is a nice engine but I had to use a short 4 stroke plug to resist flaming out at idle due to "sweating". This is mentioned in your instruction book.

I could never get the throttle linkage right, suggestions on looping the throttle wire before attahing it to the airplane works best. The throttle arm has a long arc to it.

I have the plans to the Spirit of 74. This plane was designed with the queen bee in mind too.
Don't let it fool you! It is a fun plane to fly and a little on the fast side! Lands like it is on rails!

Another good plane is the Jodel BEBE shown here with an OS .10. A little more work but another great plane.

http://www.rcstore.com/rs/general/de...7891&catego=PL

http://www.rcstore.com/rs/general/de...4971&catego=PL