6637 mod
 

Got my filter today and drilled the hole for the filter reminder, Not sure if they changed the filter design but the end is a bit thicker now. Looking at the pics on guzzle's site, his doesn't look thick at all. Had to open the hole a bit more to get the rubber grommet to sit a bit flush in the hole. Hell if it pops out, I'll get it so the grommet will slide in and put a bit of RTV just to hold it in place.

Sounds like you got it figured out.

Yes they did change the end thickness by quite a bit. Its just a fight to get the grommet in but otherwise its just as good.

I had the exact issue when I did mine in January, but the filterminder is still holding tight.