Cleaning ~e~ air valves?

ive got 8 3/8" ~e~ air valves and only 6 are working. the grounds are good the conections are good one seems like it hardly opens and the other just doesnt do shit any one ever take these apart if so i could use some help since i dont wanna screw anything up on em

Built to Rail mag had a pretty good article on cleaning valves check it out at builttorailmag.com

mine worked for 3 months and then reg cleaning did no good there just junk

yeah im pretty pissed about getting them i was originally supposed to get gc's but jason at SD talked me into buying them when they came out

i am using candos danz valves he sells only prob i got outta them in when it gets cold they tend to stick but not alot i can do there oh and that damn pos monster 10 switch box on them

oh and i found out they work real well when you aint got a hammer around

these are for SMC's but it should give you a good idea of what needs to be done.
http://www.built2railmagazine.com/issue2/valve/1n2.htm

thanx bro

ascos