HVAC actuators clicking

I have the truck listed above Lariat with dual zone climate control. I had the clicking behind the dash a couple years ago and was able to replace the actuator behind the dash/glovebox successfully. A year or so later I did the mode actuator near the gas pedal. A month or so back the passenger side was blowing only cold air. I did some research and in the end I think went after the wrong actuator. I replaced the one on the passenger floorboard. This did not fix the problem, most likely because as I understand now the one I previously replaced, behind dash/glove box is the one I needed to be replaced. So I replace that one and it fixed the problem, only once I restarted the truck. The actuator on the passenger floor starts clicking. Ran through the fuse reset process. Did not fix it. I popped the actuator out enough to cycle through temperatures and allow it to re-seat itself. Worked. Cycled up and down all the way both sides. Next day it’s started clicking again! Guy from Ford is telling me I likely have something that fell in the vents and is blocking the door when it runs through the full cycle upon startup. It never did this until I replaced the actuator behind the dash. Any advice would be appreciated at this point.