Is that you are having trouble lofting the front wheel? If so, fan the clutch, rev and pop the clutch back out. If that front wheel doesn't lift, you have some other power band type problem is my guess. Just be ready though and keep your front end under control, very easy to loop. By shifting your weight back on the approach and then rocking forward as the front crosses the log, you should be unweighting the rear as it makes contact. Bunny hopping the suspension also helps. Practice using some small object and work your way up, then when you hit the trails it won't freak you out and cause you to miss the timing needed to accomplish.