Well I beat it again and this time got 175,000. I might actually be able to get a perfect score if I keep at it. I've never done that on an Atari game before. I could've done it with Laser Blast, but I didn't really feel like playing it for 6 hours straight.
I will probably get it for 5200 some day, but I need to get a new controller first. Those things really do break all the time. I always thought that was just an exaggeration.