The wheel will naturally wobble and sway as it spins, and it isn't possible to eliminate this effect. The wobble is usually more pronounced when the wheel moves slowly, and less noticeable once it gets up to speed. As long as your wheel isn't coming off the track, it's performing normally. If the wheel is popping off the track, the rollerblade wheels likely need adjusting. If the big wheel isn’t spinning easily/stops spinning within 1-2 revolutions of being spun, those rollerblade wheels have likely been overtightened. Simply loosen each rollerblade wheel a bit by twisting the bolts counterclockwise with the Allen wrench until the big wheel can spin freely. If, on the other hand, you notice that the rollerblade wheels are really wiggly and loose where they connect to the base panels, then they’re not quite tight enough. Twist each bolt clockwise until the rollerblade wheel bolt has very little wiggle movement (do not try to eliminate it entirely, or else the rollerblade wheels will end up too tight).  The wheel’s natural wobble can also be exaggerated by an unstable base. Check to ensure that the base is on a hard, level surface and that the feet are completely in contact with the floor. If the base rests on carpet, slide a wooden board underneath it to improve its stability. If the base is not sitting flat, even when on a level floor, unscrew the threaded rod and adjust the panels so that they sit flat before re-tightening the rod.