Allrighty then! She flew two hops yesterday and is still with us
There's so many impressions about both plane and engine so I'll try and sum it up briefly.

The paint used on belly pan and pipe tunnel is NOT fuelproof. I might as well have used watercolors so a cleaning job and a round of clear varnish is needed before I fly more. Fuelproof stuff this time!

Webra ran great with a 12x11 APC (10500 rpm, tuned rich) but would not run with a 13x11 (7000 rpm). It should handle props as big as that so I'll try again when it's broken in, and lengthen the pipe to max which is about two inches more.
I ran it rich and I had problem with flooding before it started as the pump sucked in too much fuel so I had to close the needle and try again a couple of times. It takes a bit of getting used to this pump business but in the air it was rock solid. First tank I ran on the ground and the next two in the air. Dead-sticks are no longer an issue with the pump!

Vertical performance with the 12x11 was unlimited but the straight forward speed was too fast for my liking, I think I'll try a 13x8 or something during break in.

Takeoff was straight and uneventful but it needed a lot of elevator to get airborne. Long tail caused that I think. I flew it without belly pan because of the paint problem and to increase cooling over the engine and it might affect flight performance some but you would'nt think so if you'd flown it - it was very smooth and surprisingly fast for its size. I've never flown so big before! The wing is very light and rolls very extremely crisp, and axial.
I had 40% exponential which was a bit much, the elevator felt mushy although I had a lot of throw. Rudder and ailerons felt much more crisp and positive even with expo. And now I have to learn how to fly a 4-point without using rudder to compensate - 4-points and slowrolls needed just a touch of down elevator while inverted.

I really look forward to getting to know the webra and the Sky Star more. Both impressed me a lot. The plane flew as expected but the handling of the engine left the greatest impression on me. Throttling ability out of the box like that is rare. I had some serious doubts about the carb and throttle but shame on me, I will never doubt a Webra again. With a light prop load it was incredibly easy to tune, idled like a champion straight out of the box. Now all I have to do is find a prop that'll give me about 9500-10.000 rpm on the ground.