Thanks bruce will do what you say. Never had a kit yet that hasn't explained the mounting position of the engine. Im sure i will in time know how to position it without instructions, still learning at the moment. oh ive just had another thought the instructions say the C of G is between 85-90mm from the leading edge of the wing but where exactly on the wing is that ? They dont specify a particular part of the wing for example on a P-51 the balace point is normally behind where wing leading edge angles. Should the wing have a specified CofG point ? there isn't even a pic of where it should be located? Gets quite frustrating concidering this is supposed to be a beginner/intermediate kit.