It's stuck on the conveyor belt of projects guy's, it's a bit like the baggage carousel at the airport going around and around
In the meantime Simon I have provided a YouTube link to Stanley of rc tank legion, he explains how to set the smoker up in detail here
https://youtu.be/m9qCBoeBrxg
The heng long smoker is available from Dave forgebear here in the UK or from some Chinese sellers if you are prepared to wait for delivery, hope this helps
Cheers,Lee.