Hey man, try getting in contact with warwick' US distributor (Hanser?)
I'm trying to get hold of some MEC parts myself (I'm in the UK) and its an absolute pain in the butt, I don't really wanna buy direct from warwick cause I have found the parts cheaper else where but none of the sites I have found have the exact bits that I want....just about everything else of course, cept the one I want!!
At least if i do buy direct from warwick the postage will only be £10, dread to think how much it'll be to the states