Oh - what Boatpoker said
a thousand times over.
We bought an S2, and were promised up and down the signs of water intrusion to the bulkheads had been dealt with.
It had not.
We drilled in to the bulkheads (post
purchase, clearly) and MUD and water came flowing out. The ply had
completely disintegrated. So we're just finishing up the starboard bulkhead replacement this week. Port was done first.
Not the end of the world, but's its delayed getting the
boat wet by about a month. Really common issue, it seems.
Google Bulkhead replacement some time.