Nice work. Yes the weather in the southern states is certainly more conducing to building rather than viewing at the moment.
I have read that even though curved vanes get rid of the spikes, they introduce slightly more error to the image. The difference is probably negligible though and not perceptible to the eye.
A friend of mine got rid of curved vanes in his scope because he reckoned they changed shape with change in temperature, throwing out his collimation (like a thermostat?). I don't know if this was due to the materials he used or whether it was only a perceived effect
. Be interesting to see how it goes in your scope.