To door carrier or not to door carrier that is the ?

[bmwman528e]

So ever since it has gotten cold here in Michigan my passengers side door has been acting up. When my wife got in the car the other day the door wouldn't latch shut. When I drove off the car automatically locked and then she couldn't open the door so of course she had to crawl to the back and exit there. Then I parked it in my heated garage and the next morning VOILA it worked perfectly. Fast forward to 3 days later it happened again and it wouldn't latch and then after warming up it worked again.

I've searched and searched and everyone who has the notorious door carrier problem seems to have the part brake and then not work again. Am I going crazy??? Is there something I need to lube or clean out behind the door panel to keep this from happening or do I need to suck it up and pay $124 to buy a new carrier from the Stealer?