Fuel leak!!!

Hi all,
I picked my bike up on Saturday afternoon and wow! What a machine. (2003 mille in Matt black).
Anyway, went for quick spin and within a couple of miles, the fuel light came on. I went and filled it up, only took 14ltrs which surprised me, and set off home. Put my new pride and joy in the garage and went in. Went back in the garage tonight and nearly passed out with petrol fumes. A very large puddle of unleaded on the floor and now wrinkled and distorted decals on the left belly pan!:angry
Anyway, I could see it dripping from the rear of the tank so removed it, and found the leak to be coming from the pump plate. Removed this and the tank is distorted between every captive nut and nowhere near the seal on the pump plate.
My very long winded question is this, Do I play holy hell with the second hand bike shop I got it from, in the hope they don't bodge it?, or do I do it myself knowing it will be right?
What's the recommended fix for this issue? Fill the distortion with resin or reassemble with fuel proof sealant?

If you got it from a trader you should definitely return it, no reason you should be spending your time and money.
The trader should do the right thing to preserve their reputation and court repeat business.

When you call do remember to be polite you will get a lot further if there is no ill will between both parties, you would hope the trader did not knowingly sell you a defective machine.

A quick update, rang bike shop today and he basically told me off for stripping it! Said it has warranty and it doesn't help them if I strip it. Didn't think I got a warranty so quite happy now. Bike being collected tomorrow. I just hope they don't bodge it.

I have also fuel leak - sometimes.... I've purchase second (metal) fuel tank for track days, but I also use it on the road. The problem is that now with metal fuel tank, gas sometimes leaks out of the fuel cap (where you put the fuel in). How is that possible? I must quickly open fuel cap when I stop my bike and it stops leaking.
When I've change fuel tank, there was only 2 pipes - 1 metal pipe and 1 rubber. I've also took fuel pump from plastic tank.
What is the problem? It didn't happen ever before with plastic fuel tank... help please

Spider™;200522 said:

........ I've purchase second (metal) fuel tank for track days, but I also use it on the road. The problem is that now with metal fuel tank, gas sometimes leaks out of the fuel cap (where you put the fuel in). How is that possible? I must quickly open fuel cap when I stop my bike and it stops leaking.
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The metal tank is not venting properly.

Check that the fuel cap vent and the vent tube through the tank are open and functional.

While you are at it, make sure the fuel filler recess drain tube is open and clear also.