here's what i found out about your problem in your blower motor
. Something to note in solution #3. The circulation door doesn't need to be removed. The photo showing the complete housing assembly mislead me to believe that it had to be removed. I broke it in the process. The rest of the information is good. I think I will have to pull out the entire unit to repair this new issue. TO MAKE IT CLEAR THE RECIRCULATION DOOR DOES NOT NEED TO BE REMOVED. hope that this help.