Ive got a slasher and I fly it with a 25LA and it bores me to tears Im gonna have to get a different engine for it! But my question is when you put your battery pack in the wing did you use a flat battery pack... Cause my flat pack is in my other spads wing and I really dont wanna take it out but I also dont wanna go and chop a hole through my wing trying to fit the wrong kind of battery pack