Tips: Don't have the mounting brackets really tight against the part when you attempt to adjust the part with the adjusting blocks. I left the part closer to the adjusting blocks that way I could unscrew the bolts between the part and the adjusting blocks to move the part in the direction I wanted. In the picture below the adjusting blocks are within the green circles. I got fairly accurate results with this set up. I would also recommend turning as slow as possible while using a face plate given the danger of an object falling off. Some individuals actually wire the blocks to the faceplate so if they come loose, the won't fly off and damage something/someone. In the YouTube video it's a little easier to see how the unit is set up.