Have a 2003 Odyssey that is having passenger sliding door problems. When you open or shut it, it bucks & jumps and sometimes doesn't close. It's very rough unlike the smoothness it is supposed to exhibit. The van has 140K miles, we bought it with 91K miles and have never lubed the doors or cleaned them. Could this be the problem? I do alot of our vehicle service but haven't ever messed with these auto sliding doors. Please advise how to attack the problem? Thank you.