I bought a trimmer and since brand new it would bog if you open the throttle all the way. Had decent power and was a bi*** to start when the motor was hot or if the air was humid. Well I brought it to the shop and told them you prolly have to mod the carbs. I get it back and it acts like a $500 weed trimmer!! I couldn't believe the power and it never bogs. Has this happen to you guys when you buy something brand new??