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Many thanks for the advise and very clear instructions. I will have to do this fix on my machine.
A very helpful project and an excellent presentation.
A very good example of dealing with pre-defined command words [ swtch and switch].
Well done. A very useful project. I would suggest that a that a schedule be set up to test the system on a regular basis. A practice run should be done by at least two adults in the household. Fuel should be safely stored in approved containers.