I think I need to adjust the carbs, need info on how to do it.. Cold Natured, Runs good full throttle, but wife starts getting nervous.. Half throttle not bad... 1/4 throttle can hear it struggling... Idle, not very long before it starts missing and dies... Fast idle sounds rough too... If you try putting it in gear slowly and easing it around launch area it dies.. ( very embarrasing ).. I've worked on everything but boat motors, been a mechanic most of my life, so I'm pretty sure I can adjust with a little help..