GT has been working diligently, I do believe some every day!
He and I have communicated daily it seems for at least 3 months, often 10 times a day and well into the night when a solution seemed close. Member Tim Hawkins loaned me an original drum for inspection and reverse engineering, which was also helpful.
I know he has expended many hundreds of rounds of ammo and scores of hours on this project to date.
As most of you no doubt know, the trommel mag was a challenge when it was new- and 100 year old drums are not reliable either.
Not only will GT be able to upgrade the Numrich repro drum to use-able status, he can replace broken or weak main springs in original drums also.