I picked up a starcraft super sport 18 that needed a transom replaced. I decided to not remove the splashwell when I replaced the transom. I just lifted the wood out. There is a significant gap between the splashwell and the transom wood. I don't recall it being that significant when I removed the caulking prior to removing old wood. The splashwell isn't attached yet, still seems like too big of a gap.
What should be used to fill the gap?
What should be used to fill the gap?