Have you tried PM's to Nebraska FTE members that are not chapter members. I have been doing this the last few days and have been having good luck. You would be suprised at how many people don't know about the chapters.
One tip tho. Look at their profile. In the right corner it will show their last activity. There are lots that havent been active for months to a few years.
I have also poste a thread Official member count. I have sent pm's to all members on the roster. A lot have checked in.