There is no need for this 'special green' gasket paper. A company called James A Walker has paper called Sentinel(even green coloured if you like), you can buy off cuts pretty cheap. A set of Super Shite auto wad punches your kept in gaskets for life. Gaskets are without a doubt the single biggest rip off perpetuated on hapless consumers.
AJ if your having trouble you can send the old gasket to me or a rubbing of the cylinder base and I'll make you one for nothing. Is that cheap enough?