ditto the bellcrank being ****. In theory it's a good idea, but EVERYTHING Lanier makes is cheap crap. you can get a MK from Central Hobbies for about $35. Depending on your engine and balance a couple of mini servos might be good.

I will give you one other warning. you can take it for what it's worth. I will never again order any Lanier plane through the mail. Their QA is the worst I have ever seen. Of two planes and one wing I got from them; one plane and the wing were damaged (not in shipping) and other stuff was absolute crap (cracked sheeting, separating plywood, etc). You got about a 50% chance of getting a good plane from them.