I recently ordered a new masthead and anchor light post from Catalina Direct. When I received the parts, I was surprised to find that neither the anchor light post nor the masthead came predrilled with screw holes to attach the two parts together. Can someone please recommend the proper way to attach the anchor light post to the masthead. Stainless steel screws or thru-bolts with nuts and lockwashers?, Any kind of sealant? Importance of poisitoning? Please help... Thanks, Steve