Water is leaking into my bulk heads. The boat is a dagger charleston. It appears to be sealed with a clear flexible silicone. The sealant is on both sides of a thick foam pad. The location of the leak is not obvious. I would like to reseal over the original sealant. Can anyone tell me the best type and/or brand of material to use and if there are any special techniques needed to aid in a neat and successful repair. Please limit your responses to those with first hand knowledge. Thank you.