Ok, ok, yes I'm being as CAREFUL AS I CAN!!!!!!!! When I jacked the truck up, I put a concrete block underneath the axle so that it would be almighty hard for the truck to fall, and when I come back in, I don't leave the truck up on the jack. I'm being as careful as I can. And when I crawl under the truck ALL FOUR WHEELS ARE ON THE GROUND, AND CHOCKED! I don't want to be a tragedy!
P.S. Yes it is connected to the MC, because I looked under the truck while my mom pushed on the pedal. And I saw a little rod being pushed into the MC, just like it's supposed to.
P.P.S. I'm not sure that I can get those lines off. Most of what I could see was rusted, but the connections were worse. I was going to try to take the line and disconnect it where it connects to the rubber hose, but I'm worried that I'll just snap the line off.