The gx35 carb I tried to fix had the classic sputter no power issue. You knew it was the damn carb causing it and it was only a year or so old, sitting for months so the ethanol just had to be the culprit. Took that damn thing apart at least 5 times figuring I'm gonna fix this sucker. No such luck after trying and r@r-ing it onto the motor that many times just to find out I failed. At least half a day spent w/nuttin. Finally said F-it and ordered a clone that worked great. You need a jeweler's screw driver set and some fine cleaning tools to do it right, maybe even a carb tool set just for those carbs. You look at the carb from the outside and figure this is going to be easy peasy, well it isn't. Another word of advice, take pics as you take it apart to help put it back together each step of the way. I've rebuilt 3 or 4 carbs on my personal vehicles back in the day and none stumped me like the gx35 carb. That lil f++ker will piss you off!