Thanks,
Tabs duly bent and had a seasoning run and first smoke. I used the minion method with CPL Wonder Briquettes. I found that letting it come up to temp, then shutting down one lower vent completely and twiddling another one was enough to get things stable.
It does hold temperature quite steadily but I had to top up the charcoal after 6 hours or so.
Overall very impressed with the build quality. Some bits seem to be over-engineered like the grill grates which are unbelievably solid and heavy. I'm not impressed with the doors or the vents though, but overall nice bit of kit.
Ox checks are the best!