Cannot get hatches to open on Heritage SOT tandem

Just picked up this well-used beast and love it so far. The hatch covers each have two T-handles, and the covers will spin when you grab the handles and try to loosen the cover. I don’t know how these are supposed to work (the seller didn’t either) and haven’t yet figured out how to remove the hatch covers. Any ideas ? thanks

Here’s the Heritage service department mailing address:

That is, if it’s the same company: Website:

You can disregard the above post. I figured out that you simply need to twist the T handles to release the hatch.