I recently got a massey 10 and from the get go its had carb problems it will only run with choke on half way if choke is off if spits and spuds and dies. I took its apart cleaned it all out with cleaner. Put back together adjusted it. cleaned tank filled back with clean gas pored some sea foam in tank.got it to run decent enough to mow my yard. It's been parked for a week got on it today started fine mowed about ten min and it started back to spitting and spuddering again. I'm thinking I might can get by with just a carb rebuild kit. Or do you all think it needs a hole new carb? Also while I had it running good before it acted up this last time. When it's running its either wide open or idle. Your can ease the throttle up but it will go wide open.while throttle is half way up. Is that just the way it is with these motors or........help please. I hope I put this post in the right place I'm a newbie on this site sorry if its wrong.