Now this problem with my 04 YZ450F is about to drive me crazier. When I place it in first gear, hold in the clutch, rev it up for 5 to 10 seconds. No movement at all. Then it is like I let the clutch out and it pulls away, But I’m still holding it in. This is kind of a problem when trying to do a hole shot. I changed the oil (Amsoil Synthetic) and filter, check the clutch basket, clutches and plates and everything looks great. Has anyone hear of this happening ? could it be the oil ? It just started happening when I bent my clutch lever on a gate. I replaced the lever and cable first and that didn’t fix the problem. So I went on to the clutches and oil change. Nothing seems to correct the problem. What else can I try ?