I took another ride down a very steep hill to the gas station to put more air in the tires ( I had to hand pump enough to do that). It acted strange coming up the hill, then the seat came loose, lol. So I came home, tweaked a few things and took it for one more quick ride. This time I think I've figured it all out. My neighbor was walking his dogs and couldn't believe how fast I made it up and down the hills in my neighborhood. I really think I'm going to like this. I'm going to pace myself though, I am really out of shape and I still need to pedal.