I found a clearance sale on Walmart's website that was too good of a deal to pass up which was a Yard Machines 2 stroke combo pack of a 25cc leaf blower and straight shaft string trimmer for $138 and free shipping. Like at that price the trimmer is nearly free couldn't say no even if I didn't need the trimmer. I received the blower/trimmer and the blower runs like garbage. Blows smoke pretty bad out of the exhaust. Really low and bogging idle. Extremely wonky varied RPM's at wide open throttle. It often wants to die at idle and does. It's really easy to start but aint happening if you shut off the engine and go to restart it once its warmed up. I am not the most well versed in 2 strokes but should this be a carb tune away from running optimally? The trimmer I got works very well but at at WOT the engine immediately bogs down and wants to die. That one I know is just a small H screw adjustment from being perfect. I seriously am doubting Yard Machines's quality control after receiving these two engines.