It shouldn't be a loose nut. It should be a well nut? You know the ones that are seating in rubber and pushed through before the bolt goes in?
They are on mine anyway?
Another great answer from the Foccer's font of all knowledge, this forum has always been great and simple things like this, which seem difficult, are made simple again.
Dudeofrude you were right, it was a well nut but the rubber had pushed through and the nut was too low to get the bolt onto it, however after removing the inner fairing panel and undoing the bottom tank cowling bolt I was able to wriggle a finger in and push the bottom of the well nut rubber up and get it started on the bolt, then just put everything back and tighten up as I went.
Cheers dude