I have one of these and am disappointed that it's able to swivel a bit wher the top and bottom poles connect. Is there a way to fix this?

Hello, sorry to hear that, that should not be happening! It sounds like the screws in the joiner could use some tightening. If you need another hex wrench to do this, please contact us directly at support@architecturalmailboxes.com and let us know that you are looking for the hex wrench for the 7511 Coolidge Post to help tighten your post so it no longer swivels. Thanks and we look forward to helping you!