M- Sounds great! I've been considering doing the same, but our reef club is pretty small at the moment.
CK- Can you get a clamp on it to compress it together a little? (Don't torque it very much, just a little.)
If not, then I'd try a bead of #16, then mate them together and let them dry. Add another bead of #16 on both sides of the problem area, but keep it a VERY small bead, or it will pull away and leave air bubbles behind it.
Drop a picture up here if you can-
Zeph
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