Thanks for the reply. The old seal in the picture resembles the tire off a hot wheels car and it fits inside a recess in the removable seat. The needle seals against the small hole in it. There is also an additional rubber seal sitting in the bore underneath the seat below the threads that did...
Merrily rebuilding the carb after it sitting for 17 years and found the needle and seat in the kit was not a direct replacement. The new needle was rubber tipped and fit into a brass seat. The needle in the original is all brass and there is a rubber "seat" that it mates with down inside the...