hi and thanks for the helpful info, well i opened the air box to check air filter and low and behold it was 1/4 full of horse feed, mice got in through the air intake, will have to put a screen over that. anyway cleaned it all out being careful not to let anything into the carb, then i sprayed carb cleaner while i gave it throttle, all to no avail. it does seam to be the high speed jet, cause it runs fine until i give 3/4 or moire throttle, so i removed the plastic tank cover, what should i do next, i have taken carbs apart before but want to be very careful, cause i cannot afford to screw this up. also it has kn air filter and it could fit a little tighter so i think it may have sucked up some of the grain dust.