Well, after a long time of galabanting around and contemplating spending £XXX amount of money on our bike we finally bit the bullet and ordered the parts that we think were causing our shifting problems. It was actually cheaper to order and have the parts shipped from Bike Bandit in the USA to the UK than what is was to buy them direct from our Kawasaki dealer! After a few niggles, cursing, beating tools etc... the engine was complete and ready to go...SUCCESS!!! Every gear can be engaged perfectly, she's shifting like a winner! Got a couple of problems though, nothing major but I will ask one of them in another thread, we do have a small oil leak from the right hand crankcase cover, but that's easy to pull off and apply some gasket sealant. Thanks for your help! :)