I strongly suspect that i have a leak at me centerboard trunk seam. Unfortunately it is very difficult to get where the sealant is. In order to do it right, i feel like i need to grind out the old hardened sealant and replace it with new. Has anyone ever attempted this? Im having trouble figuring out how to get in there to do the work. Maybe im misguided about my leak, but i see no other place i could be taking on several gallons in a few days. My drain plug is new and in good condition.