I got the bearing but had some confusion with gyro setup (didn't have instruction). It's all sorted out and I did do a couple of flights in my backyard. Couldn't get to a field after work due to short daylight now. Let me copy what I posted from the other thread:

I did do a quick hover to trim it out. Initial impression on hovering has been positive. The heli leaped off ground and settled into a stable hover. The characteristics resemble closer to larger helis than the micros I've flown such as JR Parkmite, various Hornets, and buddy's Gaui. Not much trim was needed if you carefully level your swashplate during setup. The tail responds with authority, which was a weakness I found in other micros. Gyro is a bit sensitive and I had to dial the gain down, but works really well with the DS420 servo.

Speaking of servos, I believe the DS410 are one of the reason for the well behaved hover characteristics of T-Rex 250. They are fast, torquey, and centers very well with no noticeable deadbands. Once they are available separaterly, I will give them a try on T-Rex 450's and report back my findings.