hi ,my frames cracked on my zx6r road bike,im trying to source a small quantity (aprox 400x400x4mm) of 6061 t6 ally sheet to plate/reinforce it,ive emailed and called loads of company's ,no one seems to want to be bothered as its a just a small piece ,does anyone know were i can buy some?,thought ask here as its a welding forum.any helps really apreciated. cheers.