Recently our dryer started making a clicking noise while running, I checked the feet to see if balanced they were ok. Any ideas, very frustrated:confused: 
Hard to say without being there to here it.
The standard repair on these is to change out the rear bearing, belt and pulley. That’s would I would do.
When you go in you should thoroughly clean everything, including the air chute in the door and the internal blower and internal and external vent.
To get into it, insert a screw driver in the gap between the top and front near the edges to release clips and then flip the top back. You can now take off the front, go into the back through the service panel and release the belt and take out the drum. You can now replace the parts, clean it out and put it back together.
Here is the rear bearing kit.