OK - all done and now working perfectly.
I was unable to remove the emulsifier. It just wouldn't drop out and wouldn't budge by pushing it from the top. It seemed like it was screwed in but I decided to leave it as I was pretty sure that my main issue was with the idle jet.
All the gaskets came off easily and undamaged. I thought it would be unlikely that they would all go back on sitting in the formed indentations so was expecting to buy new ones anyway but once I put everything back together it started beautifully. After letting it run on full throttle for 5 minutes I crossed my fingers and slowly reduced the throttle down to minimum and......hey presto.......it didn't die....yippee. Before dismantling I took a photo of the idle mixture screw position so that I could screw it back in to the same position so I'm very happy that all is now working well.
Grumpy, is there an aftermarket filter that I could insert into the fuel line? I guess that sufficient flow may be a problem if it's just a gravity feed???
Anyway I would really like to thank you for all the help you have given me. I know it would have taken quite some time to put all those brilliant instructions into writing and I am very grateful. I hope that this thread is of benefit to many other people in the future.
Cheers
