I would not dig into anything at this point.
I rarely see a problem with the convertible motors.
Most problems are due to the fact people cannot count out 5 seconds, they usually are impatient and count out 5 seconds in 2 seconds.
DO NOT use the Auto feature of the window button, you MUST Press or Pull and HOLD the switch AND continue to HOLD the switch after the windows stop in the up or down position.
You need 2 to 3 full window cycles.
Press and HOLD the window button to open the window and CONTINUE to hold the button down for 10 seconds (I say 10 seconds because people are impatient), pull and HOLD the window button until the window closes and CONTINUE to hold the button up for 10 seconds.
Rinse and Repeat, if you are unsure Rinse and Repeat a 3rd time.