Ok guys, there's good news and bad news.
It is an easier job than I thought. Uncliped the seat unit, - but did n't have to remove it, - carefullt balanced it 6 inches back. Got the wife to hold the tank clear whilst I unconnected the breather, 2 hoses and electrcal bit. Pulled the tank off. Pleasant surprise to find a big foam thingy in there, - careully pulled that off the trumpets, unscrewed them, got Henry hoover in there to get rid of all the bits that had fallen into the injectors. Got the old airbox off, easy, new one on, did not tighten up too much as new box has just carbon holes rather than sleeved with metal as the old one was. The rubber tank seal was glued around the forward edge, - but 10 mins with a stanley knife got it off and useable on the new. I did have the clips on the new airbox already. Bit of a fiddle to get the foam filter over the front trumpet, think I got it ok. Tank located over front sticky out bit, - going really well I am thinking, - call the wife to come hold the tank up whilst I re-connect the hoses, - she is not happy, as she is watching the Mummy Returns, - foget the greese on the petrol connectors, - prime the fuel system, - damn, - leaking from one side. 1 of the tiny O-rings has an edge missing. I was warned, even advised by a man that knows, Nelly, to buy new ones before I started the job, - I was even in a dealer's today.
So for the sake of 10p o-ring I miss the Surrey and South meeting tomorrow.
I will be in P&H tomorrow morning for a few o rings.
Putting the fuel connectors back, you have to push them up without releasing the little clip thing on the tank? I would imagine if you push that clip in, without the hose being connected fuel will just come rushing out?
Thanks everybody that has helped so far.