Hmmm. May have to rethink then! Nothings fixed perminent yet, So thanks for the heads up!!

Could you post some Pics of your example? Did you use a header tank, and do you have any slop on the elevator linkage. I seem to have 2mm on each elevator half. I am thinking of using ball links instead of the supplied clevises for two reasons. 1) i never use standard hardware, and judging from my experiance with the u/c mounting screws, i dont trust any of it really. 2) i tend to over engineer everything i do so why be any different on the first turbine model i have built!!!