Join Date: Jul 2008
Location: Dickinson, Tx. / Somerville, TX
After reading all the posts, I agree 100% with mackman (O.P.) unless the screw holes in the blocks are elongated slightly. The wood species and MC when built determines the expansion rate/contraction rate. Most dense hardwoods, like hard maple, dont move very much. I'm also guessing that the leaf is between 13" - 18" wide
The fact that the blocks moved enough to break the glue bond says something. Did the screws rip out of the holes?
If it were me, I would move the corner blocks inward an inch or two on both ends, enlarge the holes and put a washer on each screw and then set and glue in place. After the glue sets, i would back off the screws slightly.
Retired woodworker, amongst other things, Sold full time cruising boat and now full time cruising in RV. Currently in Somerville, Tx