Whirlpool Gold Freezer Frosting Over

I have a Whirlpool Gold refrigerator with bottom mount freezer and the coil has frosted over a couple times within the last year. I initially thought it was from my daughter not closing it all of the way, but I think it may actually be the seal. For instance, I noticed a significant amount of frost buildup on the top of the freezer door just in front of the seal for several days prior to the coil frosting up. I defrosted it and everything returned to normal. However, the next morning I noticed another thin layer of frost forming on the top of the door. I scraped it off and dried it and when I checked it that evening, frost had begun to form again. The coil has not yet frosted over, but in time I'm sure it will. Does this sound like a bad seal to you guys? Is there any way to recondition the seal I have or is it best to replace it? The fridge is only six years old, but things don't last like they used to.

I visited Whirlpool's website and learned that the seal has been replaced with a new part number, so apparently there have been issues with the old style. I chatted with them and they said to try cleaning it with warm water first, but I have done this in the past and it keeps happening so I think the seal needs to be replaced.

 

You can use the dollar bill test on the gasket. Close a dollar bill between the gasket and the sealing surface. If the bill slides out easily.... the gasket is at fault.

 

I did that months ago last time it happened but with a piece of paper. I seem to remember there being some resistance but sliding out fairly easily. I'll try again this evening.

Just looking at the seal, it looks compressed and tapers inward towards the top edge. Doesn't seem ideal to me.