My 1990 C-30 model has a hole in each back corner of the steering box which allows it to drain to the bilge in addition to the drain tube which goes out the transom. Was the steering box designed like this or is it a PO modification. Also, should the steering box cover plate be sealed to prevent water from getting in the box to begin with? It seems to me that since the box has a drain, Catalina didn't intend for it to be sealed. FYI, I discovered the two additional holes in the box because the drain out the transom got plugged up and I was getting a lot of water in the bilge every time it rained.