Hi, folks.
It appears that this saga has come to a successful conclusion. At the behest / insistence of my syndicate, the Israel Sport Aviation Association and other pilots, Israel's CAA conceded that the flight manual used by a flying school here for Drifter 582s would be good enough to be the official flight manual, once a test pilot verified the data. So I took a CAA test pilot for a whiz a few weeks ago. He loved the Drifter flying experience and later approved the manual.
So this means that our Drifter will pass its CofA inspection and its co-owners can get their licenses on it. Life rocks!
Lockwood sent material that turned out to be an assembly manual, somewhat updated from the Maxair days. It had a flight chapter, but this was very short and lacked essential data.
Thanks everyone for your attention and kind words.