I want to replace the 4 foot t-track with a 6 foot piece on both sides of the boat. The starboard side is broken and I will put the new t-track on the port side as well. I have not done this before and I could use some advice as to how this is done. It looks as if the aft end of the track is bolted and screwed from the bottom. As the track goes forward, I can not see any of the screw ends. This will be on a c-22. Thanks Dale