For those who are looking for the gascolator gaskets for the older models 2"O.D, x 1/16" thick.  You can special order them from Brown Aircraft Supply call them on the phone and tell them you want he GL-30-HD and specify the gasket be made 1/16" thick it is a perfect match for around $8.     http://www.brownaircraft.com/product_p/gl-30-hd.htm