[DaveJ]

Just like to say thanks to everyone for their input and how nice it is to have this forum.
I finally picked up some smaller main jets today. They didn't have a 175 so I picked up a 172 and 168. I put the 172 in and the stumble almost disappeared, still had a bit of a bog at WOT and when I let off slightly it surged a bit. I put the 168 in and raised the needle from the 2nd to the 3rd clip, stumble is now gone and the bike pulls nice and smooth all through the throttle range without any hesitation. I'm going to pick up a new plug next week when I'm off work and do a proper plug chop.
I do find it a bit strange how far off everyones jetting is, seat of the pants riding tells me this is the ticket yet some here have almost cringed at the thought of running such a lean main. I'm sure once the temperature and humidity come I'll have to adjust it a bit as it's only 5C here now.
Thanks again.