I recently was given a Bluebird 440 pug mill from an elderly gentlemen whose wife had passed away. The pug mill is a Bluebird 440 de-airing. I have contacted Bluebird and left messages, asking for a copy of the owners manual, but no response. If anyone has the owners manual and could email it to me @. firstname.lastname@example.org, I would greatly appreciate it. Thank You so much!