[CMK]

I did this today and it's a PITA. The old, deteriorated piece came off as described, but the new piece is challenging to put in. I applied some silicone spray to the inside of the new piece thinking that might help but the issue is that the curve of the piece makes it nearly impossible to slide it all the way on. ph278501 above me provided a useful technique but that didn't work for me either. What I ended up doing was sliding the right side into the last three clips, pushing it along until I could slide the left side into the last three clips on the left side, then pushing the center in as much as I could. It's definitely not as snug as it could be but the sides seem to be the most important part to get right.