You might try fronting this question to some of the experts on the dicussion list for the NSRCA.
There is a discussion list (pattern only) one can join in on if you go to the NSRCA site: www.nsrca.org I don't see what would be so secret about sharing this info, maybe some of the pattern kit makers will see your post there and will help out.
I saw your work on your site and it is really good!