Helofan, I remember that head issue. If I remember correctly some of the the technical problems were associated with the aircraft being tested either in the US or Australia.
Due to the inevitable admin cook-ups they often had the clock-wise rotors in the US and the anti-clockwise rotors in Australia. As with the water going down the plughole principle, the aircraft had to be in the correct hemisphere for it to operate in the correct sense.
The British suggested that to overcome this problem, the project set up an operating base near to the Equator. As it happened, the British Army exercise near to the Equator in Kenya and with the Kenyans permission they would supply the security required, as long as our boffins could have an input into the project.
After the relevant clearances were given, the Kenyan New Operating Base (KNOB) was set up in Nanyuki. This was a highly successful unit, until a few months later, just when the big breakthroughs were happening, the Kenyan Landowners and Arrowhead Polishers (KLAP) reclaimed the land for the development of the Kenyan University - Nanyuki Town. (
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The project then returned to the original test bases in Perth and New Mexico, the British pulled out first, and it all went downhill from there!