Howdy all. According to my user manual, for the '07 America, shift speed for 5th is at 40 mph. Now, for fun I'll shift into 5th around that speed and be able to hold my own on level ground. However, if I attempt to accelerate, I get a little bucking for about the next 5-10 mph then she's smooth as silk. NOTE: The carbs are synced. Is this bucking due to only pulling 2300 RPMs, when I try to accelerate, or is there an adjustment I should make?