We have several of the 3300 two speed doors that the bolts have come loose on the Sync Cable assembly. The only way we have found to get the bolts and nuts back on, is to take the doors off. There are no access holes and it looks like they would have came up with a better solution to get the proper torque on the fasteners or used a different fastener type.
Checking to see if any one else is having the issue with the doors also, and better solutions to the issue.