Fuel in foam

Bill <bilfli1@...>

I'm installing a belly board in my Q2 and I discovered some fuel in the foam while trimming the foam away. I got most of the foam out that was soaked in fuel but there is more where I didn't trim away. Has anyone else had this problem?
thing to consider: my airplane has been sitting for about 15 years without fuel in it. I don't think it has a leak, but I'm not sure now.
Any insight/opinion is appreciated.

Bill McCaleb
Tucson, AZ