Hi H,thanks for the reply, itís quite old, I think about 2007, but in good shape otherwise. I did speak to someone at Excel and was advised to get some rib glue but this was before I had proven that it was from behind the strake and they also advised about using a heat gun to lift and reseal it. This sounded like something you needed to have some experience of, and interestingly why would it leak there when you would think that the strake should be sealed unless it damaged the material behind it when it was originally put on, presumably with a heat gun?? Is there anyone out there who has successfully undertaken such repairs? I wil try Excel again for more advice, fortunately I used to live near where they are so know where it is. Cheers.