In reply to Ads Co.:
The only problem I had, which was not the fault of the cooker, was using old fuel.
In the past I'd buy 2 liters, use some of it and then store the rest in the shed until the next time which could have been months at a time. It probably had more to do with having a Diesel car at the time. I never realised that the fuel would go off. It would change colour and clog up my cooker quickly.
However I have since learnt that it is always best to use fresh fuel and if you do you should not get too many problem with having to flush out the fuel line.
Now when I finish a camping trip I poor the unused fuel into my unleaded car.
So my top tip would be to use fresh unleaded fuel where ever possible.
As for the noise issue, I quite like the idea of having my own personal rocket. Makes me feel all manley