Fx wildcat accessing regulator

[camd]

Does anybody know the size of dowel pins needed to remove the rear cap of the fx air reservoir?

 

[Menttaliist]

I've not a Wildcat but i don't think it's nothing too fancy. Two allen keys should do the job as long as they have a tight fit in the holes and i would use a vice in the same way the guy uses it in the AoA video on how to replace reg o'rings