Hi Tom,
Tom Altee wrote
And cleats added in an unusual location.
Not so odd really - at least as far as the jam cleat goes. However, I would recommend that you mount it as Reedcraft did, on a small block of wood. See the photo in the Reedcraft section at:
http://www.seahawk17.org.uk/description/rigging.htm#jibsheetsand note my comment there:
"The wooden spacer is required to raise the cleat higher than the lip around the cabin door. The sheet can then be made to fall between the jaws of the cleat simply by pulling the sheet tight across the open cabin doorway. Without the spacer either the crew suffers skinned knuckles or a second hand is required to push rope into the cleat."
In other words, with your configuration, as you come about your crew cannot haul the line taught AND and get it in the cleat AND lean backwards over the new windward side all at once. He'll have to stay in the centre of the boat as the boat comes about fiddling with two hands to hold the sheet taught and push it into the cleat. And then later, he won't be able to release the sheet a little without leaning in the the centre of the boat, upsetting the balance, to make the adjustment and re-cleat the sheet.
With the wooden spacer, your crew can change sides and simply pull the sheet across the cabin opening (where there's no risk of skinned knuckles) at the appropriate height to ensure the line drops into the cleat and pull it tight in a single operation. You can also pull it tighter while leaning out without the risk of pulling the line out of the cleat, or pull the sheet aftwards to release it, so you can let out a little line and re-cleat all while continuing to lean back balancing the boat.