CA AFI electric windsheild wiper motor issues

Reaching out to anyone who can give me some guidance. I have two AFI electric windshield wiper motors from Toms Bronco parts. I installed them a while ago and the wiper on the passenger side operates perfect and stops in the correct position but the drivers side always stops out of alignment. I have opened up the unit and attempted to rotate the timing wheel but every time I get them signed up the drivers side goes out of alignment after 10 cycles or so. It seems like one of the motors is just a bit slower than the other one. Has anyone else had this issue? Or know of a fix? Confused, please help

Blue,

PM a moderator to move this to the Tech section--somehow it ended up in this Free Stuff--you'll get the answers you need in Tech or the Bronco Chat section (located right above Tech)

Have you contact Tom's?