Next mod was to replace the stock latches. These are OK but a bit weak and also leak very slightly plus they do not close the doors very tightly. Having installed Nomex gaskets everywhere the doors still leaked slightly. Not enough to spoils a burn maybe but I'f I'm going to drive this thing with forced air and two microprocessors, web link up etc etc I want a real seal!! I ordered lift&turn compression latches from a surplus stock supplier in the US.
First to shape out the latch holes in the door. Fortunately it aluminium so easy to do with a Dremel.
The finished job. Just the business!