I haven't completely disassembled it yet but I did notice that my manifold does not have the two washers that are inside the Elbow Reserve.
There appears to be a gasket, the spring (20 - 0502-20) and then 0502-29 (Disc & Retainer)
My manifold doesn't have Item 19 - 0518-06 (Washer) or Item 21 0517-06 (Washer).
Does it anyone know if these are needed with this manifold? Also, if there is an appropriate replacement for the gasket (or o-ring)?
I have attached pictures of the parts in question.