While trying to track down what I thought was a misfire at high temps , I happened to have my hood open one day when my primary fan kicked on. As it turns out, the primary fan blade is horribly, ridiculously out of balance. The primary fan was replaced at some point with an aftermarket one. The blade doesn't wobble forward and backward so it's not loose on the motor shaft, but it wobbles up and down almost 1/4". It's enough that I can feel it shake the car enough that it feels like a misfire. Since the secondary fan almost never comes on and runs smooth when it does, I'd like to swap the primary and secondary fans. At this point in my '95's life, I don't have much confidence that I'll be able to get the motors out without breaking the screws. I'm wondering if I can just unbolt the fan assembly and flip it around, or if it only goes on one way so I have to try to swap the motors and blades in the frame. Thanks for the help.