first off make sure thats def where its coming from..
mine was leaking from there the other week and i thought i had to buy some new seals but it was actually due to the hood not coming down onto the body and windscreen tight enough..
all i done was ensured the the hooks that hook into the windscreen were actually tight...
best thing to do is undo the hood, then press the hood down at where it joins the windscreen and tighten the hook up as much as u can, if its slack..then hook it under normally..then test with water..
if its not that, it may well be your seals..
Dinx