Hey all. Ran the second tank of fuel in today. Cracked the throttle full a few time. Running it on a hard surface and a pretty good distance. I figured it would be ok to do that. But was strange I never heard it shift to 2nd. Seemed to stay in 1st whining out. Kept the throttle wide opened for a short time. Ran it like that through the second tank. Didn't hear any shifting. I wouldn't think that the shifting has a time for brake in also. Has anyone adjusted the shifting to second ? Don't want to create any problems.