I've owned my boat (2001, 192) for 4/5 years and it's run like a top. The other day I noticed that somebody at some point blocked the vent with silicon (on the bow next to the gas cap). I'm presuming this vent should not have been blocked and I don't know why it was or when it was done but I never noticed it before. On one hand the boat runs beautifully so I'm inclined to just leave it alone (leave it blocked), but on the other hand it just doesn't seem right. Anybody have any ideas or suggestions?