Hi folks I need some help with the PID settings on my APM2

I have it mounted on a 650 quad and at the moment it returns home and loiters OK in a breeze up to around 7mph max, beyond that it has no hope at all of holding position

What setting would I need to change to give it better Loiter in slightly stronger winds ?

Thanks

Terry

http://www.youtube.com/watch?v=3FYuAGMw4eU