Jeff as for the carby mod I don't even bother trying to start one until I have modded the carb. I just did one for my grandson this afternoon, he picked up a good condition powertorque and catcher for $7, I did the carb and off he went pretty stoked with an good condition,easy starting mower. The bloke he got it from just wanted to "get rid of that piece of junk" I haven't done the Tilta Cut edger yet but will be exactly the same once I mod the carby, so simple and so effective