hvac blend door actuator noise

My Taco has developed a case of the clickity clacks presumably coming from the blend door actuator. I've read that there are three of these behind and under the glove box. Does anyone know which one(s) are more prone to this issue? Or how to diagnose which one is the problem child. I appreciate any info you can provide.

 

If you haven’t already, I’d start with the blower motor/fan. Check filter and blower for debris. I think there was also an update to this unit, the older ones would fail at the motor shaft.

 

Give thanks @Chew It fixed itself for now. I also recently replaced the cabin filter with a K&N washable filter, so I know that's clean. I'll check the blower motor/fan also if/when it starts making noise again.

 

if you were recently in there, maybe go back and reinstall? Something could be misplaced.