My turn for a "my b5 rocks" story!
I followed the break in guide on page 3, stalled a couple of times while I was getting the (seemly) huge idle gap sorted out for break in. Had it heated up and idling in no time...
Idled the full tank like a train (Had oil all over my shirt so thats a good sign it's rich enough

)
Did the rest of the boring breakin (I hate breaking in engines...) with no flame outs for the rest of the 7ish tanks. Slowly leaning it off.
Had to wait 2 weeks till our next prac session, but I got it purring along with a good - but not 100% tune...
Had plenty of good sparring sessions with my mates OS Speed (My 808 Vs Hyper 9)...
I wouldn't say this engine is faster, but neither of us had a definite advantage anywhere in the Rev range. Ran the same plug since breakin... no problems all day
Running :
Ascendancy 4 Shoe Clutch 1.0 Springs
XRAY 16T Clutch Bell
TTR 2035 Pipe
OD 97T Plug
Ran for 10m 22sec on a full tank with this setup... (Only timed once however)
Not quite enough for me to pit at 10 - which pipe would get me some extra seconds? (Im not brave enough to risk running out of fuel

)