OK with a brand new 2006 Tohatsu 2 HP (old stock) 4 stroke, the idle vacillates up and down. I increased the idle screw just barely so that it wouldn't stall at idle while in gear. Now when I take it out of gear the idle increases too much, my guess is about 500 RPM increase. Consequently, I believe it is too fast of an idle and it slams into gear. The motor is not running rough under any circumstance. If you just let the motor idle, it will vary all on it's own. Is this normal for this motor?