I recently purchased my first table off craigslist. It's a furniture style Brunswick about 14 years old. (yea, I know I should have bought the GCIII- but I have to keep the wife happy). 3/4" slate. It's solid wood with a veneer on the outer and inner surface of the frame, it's a good looking table.
The first issue is with the brackets at the corners which connect the legs to the frame. There are threaded inserts into which the bolts holding the brackets attach. One of the threaded inserts is out, this was discovered when the installers were tightening the brackets. I assume that this happens when the bolts are over-tightened and the fix is to use wood epoxy to secure the threaded insert.

The bigger issue is with the brackets themselves. The wings are not flush with the frame.

And the floor of the bracket is bowed up.

The diagonal bracket from this one is also bowed at the bottom and not flush with the wood at the wings.
Here is what the other 2 corner brackets look like.

So my question is how would you correct this?
Thanks in advance, I've learned so much on this forum already.
The first issue is with the brackets at the corners which connect the legs to the frame. There are threaded inserts into which the bolts holding the brackets attach. One of the threaded inserts is out, this was discovered when the installers were tightening the brackets. I assume that this happens when the bolts are over-tightened and the fix is to use wood epoxy to secure the threaded insert.

The bigger issue is with the brackets themselves. The wings are not flush with the frame.

And the floor of the bracket is bowed up.

The diagonal bracket from this one is also bowed at the bottom and not flush with the wood at the wings.
Here is what the other 2 corner brackets look like.

So my question is how would you correct this?
Thanks in advance, I've learned so much on this forum already.