2001 Chrysler Town & Country trans fluid overfilled

Checked trans fluid, looks overfilled, at times does not shift properly

How did it get over-filled? Did you do it? Did a shop do it? Or has it mysteriously started to overfill. The last one likely means your transmission cooler in the radiator has failed and is allowing coolant (water) to enter your transmission. That will kill it very quickly! You need to have that checked out ASAP!