right, we have success! with thanks to the previous replies i have ordered, received item from ebay i have fitted a borrowed dizzy only to find that the under powered issue we have been experiencing the last few outings was in fact a head gasket blowing, and i think that the dizzy finally packing in blow the rest of what was there out :undecided:.
So in conclusion we now have a GG with head gasket needing replacement, grrrrr but we have a shiny electrilically dizzy thingy to fit :cheesy: