2 spinning GG?
 

anybody tried spinning 2 GG in there agus in reverse directions?? just curious to see what it would do... probably nothing, but who knows...

Two spinning gg's would = two focal planes and would not work. Yes, I realise that the two gg surfaces could be made to work face-to-face, but the precision required is beyond most home constructors and the focal planes would still be separated. Even a miniscule amount would be enough to soften the image.