Silly question, but have you tried tightening down the collar ?
I had a few leak in the past out of the top of the gauge cover as well. Had to use apoxy.
We did tighten up the collar. Haven't been on it since to see if that will solve the problem or not. It will be covered under warranty but I was hoping that maybe it was just something as easy as that collar being loose. I'm mostly curious also to see if it was an issue that others have had.
Rode it this weekend after tightening the collar up. It still leaked so I just dropped it off to get checked out. Hopefully it is something quick and easy to fix. Will let you know what was actually the issue.