Happy to say my DIY conversion is now (just about) complete. This in no small part is thanks to the prior contributors to this font of all Bongo knowledge.
One thing I am missing is a Gas safe engineers certificate for the smev/3.9kg propane bottle install.
I would be grateful if someone could point me in the direction of a local trusted engineer. (I have 12 Gas engineers at work - but none are Leisure certified!) - Happy to travel, but South Manchester, Cheshire etc would be ideal.
Help will be rewarded by heaping praise

Cheers
Roy & Debs