Those pissin carbs have got me several times, the most frustrating when I remember to relieve the pressure the first time, then do some testing, and forget to relieve the pressure the second time!
But the stupidest, jacking up the Mustang on an un level driveway. No need to block the tires, it is in gear. Damn that universal joint was hard to get apart! Good damn thing I was fast as heck back then, got out from under it just in time.
Never made that mistake again! Physically was fine, mentally terrified.
Whether you are cutting trees or working on cars, always be carefully watch for movement and step back when that tree starts to go. It will help to keep you safe.