flgfish

+1
The larger ones with the felt WILL NOT fit into the slightly smaller holes that are outlined in red. At least in my 2015 C2. You can see them installed in the mounting points above them, though. They used two different sized grommets to mount the same sized little ball-connectors. Amazing.
I ordered the wrong ones.

Greg D.

Thanks for that... While available online, they cost peanuts - $2.50 or so - but like $10 in shipping. I passed by the dealer and got 2 news models for $5 total, zero shipping. The new one has that foam ring on it. That's not visibly different otherwise.