Yes, you could double your price and it is still one heck of a deal!
having to run part choke would likely do it. i got a lawn mower with manual choke and you can tell it is running rich till you turn the choke off at which point the exhaust cleans up. also the plug in one with battery back ups are usually the better option. then you don't have to worry about changing the batteries every 6 months or yearly or whatever it is.Miles, I put a spare battery-powered CO detector in the garage, which provides a bit of peace of mind. But my "new" tractor (Kohler Command-powered) kept setting it off when I'd start it in the garage, before immediately driving it outside. Not sure if the carb tuning being off a bit is the cause (I do need partial choke to avoid surging),