Well if you need a hand at all at BITW.. I know a decent pilot who is available, and if Tam says no, then I am always around
I have watched Andreas and Wolfgang fly the factory one and it is almost as if the nose is castoring on the take off and landing roll as they are banging in huge rudder inputs to keep on track. Go with is like that and maybe just have the brake operated steering for slow speed manoeuvring??
Regards Al