Hi folks... I'm trying to trouble-shoot a wiper problem. The wipers have been working more slowly than normal recently, and now they barely work at all--in fact I'd say they don't at this point. I determined the motor is getting 12v when the switch is ON and it is grounded. So I am now trying to get the wiper motor out to see if it's corroded or by some other problem in need of fixing. I have the cowl piece off and have removed the three bolts that hold the motor in place. It's loose but I cannot figure out the right way to disconnect it from the wiper arm and pull it out. What's the trick?