A moto guzzi gas tank project

Hello I am an industrial Designer who is in steel and facade contruction bussiness

I also own a 1992 SP3 1000 Moto guzzi. Currently I am redesign it slowly as a Cafe Racer.

I really want to make my own Gas tank because the old one is rusted and old. I have at my disposal all the neccesary tools for aluminyum welding and cutting etc. But Even though I use Rhino, grasshopper extensively my knowledge on kangroo and curve folding knowledge is very low. I designed some simple tanks with welds at their edged. But any help on how to use kangroo on curved folding would be greatly wellcomed. Can any one supply me even with the simplest GH definition which I can improve and learn the stuff. A curve fold gas tank for my Guzzi would be the coolest thing for me.

Any suggestions would be also greatly wellcomed

regards

Tonguc