Realised the reason for the thing being off center was a rather dumb and unnecessary mistake of my own, won't bore you with the details, am today fixing. Also looking at ways to economise on constructing the vanes, timewise. Reckon there'll be some economy of scale doing three at once, can hopefully get it down somewhat from the current hour forty per, which is frankly already pretty much ok.
Picked up a car alternator yesterday for $40, which is pretty good, and had a look at the Nelson Environment Center where I'll hopefully be doing the first construction workshop mid next month. They want at least four weeks warning tho, so I'm going to have to hustle getting it all signed off on and good in the next week or so.