I recently bought an assembled Guhong V2, and it came really tight and slow, so I assumed that the performance was because of the tight tensions. However, I loosened the tensions just above the point where the cube would pop, but the cube was still really choppy, meaning that the cube was still too tight. I later loosened it until the speed was acceptable, but now it pops relatively easily, and any corner cut above line to line pops it. Is this a defect, or am I doing something wrong? For reference purposes, all I did was clean it out, and lubed it with 50k, aside from the tensioning.