Wet Carpet under driver seat, RHD.

[Ady]

Hi guys I have a 2002 boxster, discovered I have a leak somewhere a few weeks ago, a pool of water under the drivers seat & foot well carpet soaking, i know about the drain holes under the lid for the softop, checked them out, the one behind the drivers seat might have been blocked, not convinced though, the softop is really good condition, i have checked all round cant find any leaks, anybody any ideas??