Air Regulator on MC9

[simpsonlang]

I have an Air Regulator that is leaking. I previously replaced a regulator with a brand new one and that one took almost 2 months through Mohawk. I found the rebuild kit at Mohawk but it's backordered with no ETA. I was wondering if anyone has an alternative source for the rebuild kit. Based on other threads I know it's a Williams WM279E1/4F-22-34/111940-482 and repair kit 12F-4-33. I tried calling Weldon Parts but the best they could do was provide an entire valve. I'd rather rebuild them if I can find an alternate repair kit part number.

[simpsonlang]

I found the repair kit part number in a Williams spec sheet as 114224. A google search found BSI might have it so I called and they have nearly 100 stocked so I was able to get it. About 1/3 the cost of the new valve.

http://brakesystemsinc.com/store1/williams-controls-and-bsi-pneumatic/r279-series-repair-kit/