Hi Wain I'm in deepest darkest Kentucky at the moment
Fuel tank leak where's it leaking from ?
Hand brake , start on the rear adjusters you have to remove a bolt then adjust them , then move onto the cables just google mx5 handbrake adjustment and it's all there , I had some slippage on the cable where I had modified it but removed the plastic sleeping and redid it and it was fine
If the tank is leaking from a seam get a bar of soap and rub the seam the wax goes in and seals it temporarily but it might just get you through
Let me know how you get on with the brakes as once mine were adjusted they were solid and let me know about the tank leak and I will see what we can come up with
remember we are not mad just creatively insane