If you're going to buy a 40 LA just for your Yankee Twister, do yourself a favor and get a Thunder Tiger 42 GP instead. Same weight, less money, more power, and a better running engine.

See my avatar? That's a Stickit IV with an OS 46 LA and a mousse can pipe. I never flew the Stickit in competition, just for fun. During it's lifespan, this Stickit was also flown with an OS 32, Webra 32, TT Pro 36, TT 40 GP, OS 40 FP, and a TT 42 GP.......all with MCPs. Out of all these engines, the TT 42GP w/MCP was my favorite in the Stickit.