There is only one manufacturer of the DISA valve, I'm told.
Personally, I think that manufacturer should be shot - but supply and demand being what it is - you don't pay what YOU think it's worth - you have to pay what everyone else thinks it's worth.
If mine goes south, I'm rebuilding it. I don't like rewarding the original manufacturer for making a lousy design (think pin ingestion).
Last edited by bluebee; 01-27-2013 at 12:49 AM.