I'm pretty sure it is charging all right, as immediately after running the car for an adequate period of time the car will restart fine. It's just over time that the retained charge declines, as though it's been slowly drawn away.
Current draw at rest is about 0.6A. All I can think of that may legitimately draw current in my setup is the centre console clock. No other accessories are fitted.
BTW, do you remember sending me a centre console and clock by COD to VIC a couple of months ago?