no, I haven't installed them yet, I'm still considering using mini servo's and cutting new holes. I see what you mean by different offset's.
Also I'm not an expert builder, but I'm not to concerned with not gluing the stab. steel is stronger than glue

I had another ARF that had a bolt on stab and it flew fine. Came lose once so I used some thread lock. Never happened again.
Can't wait to fly this "UCD"