I've had several people contact me for details - some with deals gone bad with Warbird as well. So, here's my details:
I sent him a beautiful TRW trigger group for a NM trigger job. He sends it back with a note that the hammer spring tube is cracked. Doesn't contact me before hand to tell me so we can replace it. I can't tell you if it was cracked when I sent it to him or not. Other than being heavy, I had no problem with trigger pull before.
So I try out his National Match effort and contact him via email to tell him that the trigger feels like shit. He then tells me it's because the hammer spring tube is cracked. Bullshit - it had nothing to do with it. Changed the spring tube out with another one, and trigger pull was still every bit as shitty - more creep than you'd find in at Jackson 5 family reunion. Warbird essentially laughed it off and did not offer to rework it.
The next time I tried to take it apart, it locked up, and it now sits in a box with the rest of the useless crap I own that I can't bring myself to part with. Someday I may find a good use for it...and I'll leave it where I've shoved it...
My experience only - YMMV