Hi everybody I am newbe on this forum. I own an old Thunderbird since 2009, and my windshied wipers don't work anymore. The wiper motor seems to be very coroded and I tried to remove it. This is almost done, but I cannot remove the small arm on the motor's shaft. The bolt seems so hard to unscrew that I am wondering if this bolt is right or left threaded . I am afraid to brake it. Who could tell me if this bolt is right or left threaded ? Thanks for any help !