Tevo Tornado X-Axis Pulley Wobble Fix

The Tevo Tornado is using two 8mm ball bearings on a 7.7mm screw as an idler pulley for the X-axis belt. This causes the bushings to wobble with 0.6mm offset. This wobble together with the incorrect position may causes vibrations on the X-carriage. This fix properly aligns the bearings for the belt. You need a M6 x 25mm screw (can be longer) and a M6 lock nut to replace the M8 screw. Tap the parts with the M6 screw first from the opposite side and align the notch with the bottom of the bracket.