Multiple reasons. The main One, was that, for some reason, I hated how it turned ootb and I don’t have the lube and stuff needed to be able to proper care for it. My nova yj yusu turn better than it imo, except for the corner cutting. I also got the aosu for free. I’m probably gonna return the yusu and sell the aosu, and then replace it with the yj mini 4x4 and some vortex and set it up