I notice that your original reply to Penny has been deleted by the board administrator, I would assume, for its absolutely snotty tone. Here's a fact: you are not the only one in the universe who has had misfortune in your life. I'm sorry you were hit by a truck, but it's time you either got some therapy to work out your rage, or moved on.
It's a lot easier to join a community and find good advice if you don't alienate everyone with put-downs and arrogance. Time to grow up and decide just what you are trying to prove, and to whom.
marys
(by the way, I own Park tools and do most of my own work, too. And I was injured and unable to ride for 6 years, so I know of what I speak).