I was just at Ram Jam yesterday. It was my first time on my YZ426. I was in second most of the track and third on the straight away. If you keep your speed up in second and grab a hand full of throttle at the face of the jump you should clear the double. Body position is very important, I try to be centered on the bike. Personally I would try some of the more forgiving doubles on that track first. I am new to riding the four strokes so you may know more than I do!