Hi. I own a M5. Last week I was using it on a helicopter dauphin. While flying I had to keep adjusting the ROLL TRIM at my DX7S spectrum, that's because it keeps loosing the roll horizon. After a while, realized the ROLL TRIM button was broken, could feel the click was gone, maybe some coil inside it got broken. Anyway, I wonder if someone could advise me on how to move this ROLL TRIM function to some other button on my DX7s, or even point me to some step by step DX7 config... I'm using it without changing anything since I bought it Looking forward for an answer. Regards paulo.