I just bought a backpack blower...mccolluch for only $150. I know it aint commercial, but I was lookin into the deeres, and it has the same specs. Anyways, It has a trigger lock, but only locks it in at half throttle. It would make so much more sense if it locked it at full. I don't know if it is supposed to be like that or not, but is there a way to fix it?