Steve, if you ever need help, whether mechanical, food, or lodgings, and you are between Cambridge and MK, as you often are, feel free to give me a shout and I'll help if I can. I did email the team a while back but had no answer, so am happy to repeat here if it might help.
07858 402683
I live near the Airman Pub on the A507 Henlow/Shefford, and work near Sandy - I know it's not far from base, but if the weather takes a show-stopping dive, or the wheels fall off, it may save a walk or a kip outside.
Totally in awe of what you are doing and wish you all the best in reaching your target! Keep at it, do it as you think best - I recon you have earned the right to call the shots!