This is interesting. I have never heard of or experienced this issue with my 93. Weak motors, sure. Replacing the replacement motors about every 2 years, check. Dry tracks stressing the regulator, that was an issue too. ...but once I got the "improved" motors, no more slow roll up, and it's been almost a decade since I had a motor fail. I have equal operation on both sides. Same today as the day the motors were installed. Guess I got lucky or the wiring was changed to save a couple pennies per harness. Just more proof that even when things seem equal, our experiences always differ. Glad I'm not on the short end of that difference for once.
The wire sizes, switches and connectors are identical on the 93 and 96. There are just two differences between the 93 and 96. The 93 has a 35 amp circuit breaker while the 96 has a 30 amp breaker. Also, a splice for one side of the driver side wiring is in the door on a 93 and behind the instrument panel on a 96, presumably to help the express down module work better.
The passenger side wiring is weaker because it goes all the way through the driver side door window switch to reach the ground. That is so the driver side switches work the passenger side window.