Having a lot of experience is definately an asset. From what I know, rather what I've read on this forum, a low OAT score is usually balanced out with a high GPA. If the OAT is the only weak link in the application process you should be okay. If, however, you're OAT and GPA are weak, dynamite experience will probably get you some good consideration, though you may be sitting on the fence with this one. All the best, and never, ever, give up.
I-Ball