Just in...
Coolant drained, system flushed and Weston beach replaced with gleaming blue liquid.
Front mudguard fitted.
Then a lovely little angelic gnome appeared. 'Take off the front sprocket cover whilst you're down there' he said.
'Nah' says I, 'no need for that'
'Oh! go on' he replies 'you know you want to'.
Aaaaaarrrrrrrrrggggggggggggggghhhhhhhhhhhhhh !!!!!