Norris W2 Rocker Arm

Need the help of the collective knowledge base here.

I run a 382 stroker small block, based on a 360, in my 72 Dart. It has W2 Econo heads with Norris 1.6 ratio rockers. Yesterday I had the adjuster on the #2 cylinder intake rocker back out and before I could catch it the adjuster is now seized in the rocker arm. I have seen in some sources that Norris went out of business some years ago, and others say they still make rockers in limited quantities. Does anyone know for sure? I haven't removed this one rocker from the engine yet, so I haven't done a complete evaluation of whether or not it can be saved. Can anyone help me out here?