 First time I get out and I test drove it, everything was fine. Of course, I get it home and I take it out for a test drive for about 10, 15 minutes. And the right rear brake is locking up. I'm thinking it's drum brakes all the way around. At first, I didn't know what it was. If I back up and go forward, it will brake free right away. Do you think it's the rubber lines? I did take a peek up in there, just visually looked at it. They look like they've been on there for quite a while.