Blower motor is likely on the way out, common issue. The motor is NLA, you will have to get yours rebuilt.
Quick test is to run the fan on high (engine not running), then shut it off. If you hear some bumping and grinding as the fan slows down that means the motor bearings are shot.
I do not check PMs. Call or email if you need something.
ECR is not a parts source. We are not in the mail order business.