Received mine a couple of days ago, but I noticed that there is no o-ring at the bottom of the deck like in the product pictures here on FT. When I install different o-rings which seem to be the right size, the JFC bell won't fit.

It seems like there should be a groove around the bottom of the deck, and on mine it appears to be too shallow. Could someone be so kind and see if the groove on yours is deeper than on mine?