Having had issues with the eating and LPG, I decided to start the ball rolling with tuning the carbs for Petrol.
At the end of the day, tuning the carbs has no effect on how the LPG will run, though tuning the ignition will.
Tuning did not take too long, but then I had all the info I needed, plus a vacuum gauge to measure the draw on each carb, so as to balance them.
A must read – https://www.v8register.net/FilesV8WN/SUbookletsAUC9939AHIFtuningandservicing.pdf
NOTE: You need to save the pdf to get around the errors
A good vid – https://www.youtube.com/watch?v=ASeMfXfjNpw