Need help! Removal was simple up to the point where the motor was ready to fall out of the main body, but was hung up by a brass screw through from the cab. There is no phillips or straight slot. It appears to be a flat knurled screw head that is depressed in a small circular indention. I can't turn the screw with either needle nosed or flat nosed pliers.  How can I get the motor out? See photos.


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Mike