I have some news about this topic.
My dealer was on a visit to Hobie US and took the opportunity to raise the question about my leaking front hatch. She went together with a Hobie representative (Brandon) and actually looked on different AI's in stock and production.
Hobie are now aware of the problem and stated that it is a Hobie problem (not mine).
Thanks for that Hobie!
I have no intention to claim a new hull at this point, I will try to fix the problem myself. But now I feel ok with tampering with the hull cut.
But the claim is filed in July and it took until now to get an answer. It really shouldn't be necessary to "send" your dealer to US to get the information through.
Maybe this is an effect of bad working, too long "chain of supply"?
And, of course a BIG THANK YOU
to my dealer! She never thought this was my fault from the beginning.
I will post pictures of what I do to solve this, if there is any interest.