I'm saying it's the throttle interlock lever on the handle. I'm not talking about the handy little button that holds the throttle partly open for easy starting that all old saws had and most modern saws don't but should have. I mean the "safety" lever on the top of the rear handle that must be depressed before the throttle trigger can be pulled. How many of you have duct-taped the annoying thing down, or just removed it completely and how did it ever become such a safety issue to begin with?