Well it appears my ngk iridiums were all supplied with a .80 mm gap so no adjustments were made today as this is the gap recommended by the LPG guys on different LPG forums.
Although I've not solved my rough running, it does highlight that you should atleast check the gaps on your plugs incase they are incorrect or not all the same.
Right I'm off to shout at the LPG installer.
Steve, as you may realise I keep getting delayed coming over for one reason or another so would you like me to send a deposit via paypal so you know I'm serious?
Cheers
Pete