I have been taking in water more and more each time i go out i have notice the the bolt s near the drain plug are very loose i and happy to finaly find out why water is coming in and where now how do i tighten the bolts it has a porclen type cap on the outside of the gimbal do i pop the cap off cause i tried that and it seems like im going to break it or do i tighten the bolt from inside the boat ????