Hi Mauricio, I have a 473 , new in 2006 , despite at times ,sailing in some very heavy
weather , I have never had a leak problem in that area , I also have not come across anyone else with your problem ,so it suggests that possibly it was not fitted correctly originally.I agree with the previous posts .Take it out and clean the area perfectly and ensure that you use the correct
adhesive ( check with Beneteau ) and I would definitely apply pressure / weight when fixing the glass / perspex . I have in the past had some great help from Sunsail who have had many Beneteau 473 as part of their
charter fleet . A very knowledge guy is the
maintenance director for Sunsail in Split
Croatia , his name is Dragan his mobile no is - 0038598486007.The only other thought is , my
mast is
keel stepped , so I assume yours is the same ? , are you possibly getting some form of loading through the
mast deck seal area , due maybe to incorrect tension on the standing
rigging , It is a long shot ,but maybe . Good luck Regards Garth Gregory - South Africa