[] Beginner from England here with difficulty ... My Christmas build Tiger Trainer 40 (60" span) and powered by TT 54 4 stroke motor, running 11 x 7 prop consistently balloons up in the air when either in to wind or, increased throttle - my instructor tells me so many things at once I lose it and he takes over the buddy box controller - My question to you knowledgeable folk is how do I prevent this ballooning - I have added nose weight - I have trimmed with slight down elevator - what should In do ??? Thankyou for any responses .... Regards, Rob.[8D]