Thanks all for the replies. I understand that my bike isn't the greatest, but I don't really ride enough to justify spending the amount of money I would need to buy one at a bike shop. I live in a fairly rural area too and at the only bike shop within an hour of me, I think the adult bikes start at about $400.

I got my last bike at Target too. It turned out to be a good bike for what I needed and I had no problems with it. I guess that Target had a better assembler. Unfortunately, I left it behind when I moved.

Does anyone have a pic of the RDER or barrel adjusters? I didn't see anything that looked like it in the link, though I'm not the brightest bulb. I'm not familiar with them at all and could use a little help. Thanks again.