I'm looking for an open design that I can mill myself. I have a set of 8 U8 motors to be run with 26" props and I want to design a craft around that. I was thinking of taking a Tarot X4 and replace the stock arms with the arms from a Taror X8. The concern is the center is too flimsy. Are there any center plate design floating around in the ethos that I can mill myself? Thanks!