Well, is my face red!!
I hadn't got around to reading the suggested documents (though I did read your word doc). Since a maladjusted indicator rod caused slippage in second, I thought it would be the same for first gear. My inexperience with these hubs shows up here. However, now that I know where to find more information, hopefully my troubleshooting will fare better as I educate myself about them.
Sorry about taking up your time. I'll keep you posted about progress with the hub. I hope to get to it tonight.