[sausagehacker]

I'm guilty of using a silicone based sealant...

I grabbed some at Home Depot that's designed for glass and metal bonding (think: what holds together fish tanks). It should be easily removable with a razor when the time comes to have it professionally redone.

I used painter's tape to make sure the sealant was applied directly to the crack. Mostly a cosmetic thing I guess. So far, no more leaks! Before, I could literally see a couple drops every second splash in during a heavy rain. Fixed for $4