Replacement Diaphragm for Orbit Jar-Top Valves

Ordered 2 replacement diaphragms and support rings. The diaphragms I received didn't work. Santaprene, that they are made of, was yellow-brownish in color, looking either old or used. Didn't work sending me on a wild goose chaise trying to figure out why else my valves were not working. In the end I had to buy brand new valve assemblies and, surprise-surprise, the diaphragms from these kits works right away. They also didn't have the brown-yellow colored rubber-like santaprene, but proper white one. Extremely upset with the vendor and if it didn't cost a lot to replace my irrigation I would. Will not buy anything from Orbit at this point.