i have a saito .91 in an 11 pound hacker spitfire and i need more power. the .91 just isnt cutting it against the local me-109s . i need a motor that will give me more speed. will a saito 1.25 give me a noticeable increase in speed and vertical. what do i need to get an 11 pound spitty to move out? saito 1.25, bcma 26cc, rcv 1.20 or any other suggestions?? thanks!