there seems to be a bit of confusion about these particular BD heads.

these heads were bought from MM by Dap, as a retail customer.
MM didnt know they were going to be shipped to me, or that they were going to get flow tested or scruntinized.
they were delivered to Dap(and then to me) in a "ready to run" condition.

my guess is that MOST of the BD heads that get sold, will be prepped by the retailer...not Bulldog.