Finally thought I'd got the 'new' girl sorted, ready for the Santas-on-a-Bike run on Saturday.

Could NOT get the tank back on, as it had expanded such that the bolt holes were not usable.
Resorted to sculpting with wood chisel and hammer plus half-round file.

Am told that higher grade fuels of some makes still have nil E, but it's too late now for this one.

Bah !