[Stillrunning]

If your standing in the boat looking at the transom is the crack in the left corner of the splash well. Where you cut open and could see the gap that is ok but the inner shell should meet the transom where the engine mounts. From what I see you may want to start by cutting of the fiber glass that covers the top of the transom. This will give you a good idea of what is going on and the is a good post step by step of how someone mad that section all one peice as those transom caps have been issues. Could the crack hav come from the transom not metting with the transom where the engin mounted and when they tightened the engins mounting bolts it force the splashwell to pull in and eventually caused it to crack. Mine had in that area which was filled with body filler as I explained above. Maybe try inserting a bolt in one of the top holes and see what starts to move s=when it tightened. Just a few ideas.