| bit of a thicko question but when the petrol leaves the petrol tank how does the air get in to replace it?
There are two pipes leaving the monster tank at the back base of the tank? Do either of these supply the air?
Cant see that even if these two ball bearings in the cap mount were working where the air would come and go to easily!
There are two holes in the top of the tank when you take the whole machanism out! Do they supply air? More complicated than I firsat thought. Suspect if I drilled the mount rather than the cap then this may not makle any difference!
Very confused
Mark | 
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