CHEAP way of trying a set up is get a piece of ply wood and 3 boards . Take two of the boards and screw them to the ply wood so that they are loose enough to move just a little longer than your 4 links bars are going to be, and take the third and screw it on top of the other two at the other end at the angle you want your pinion to stay , work it and move your screws on the front forward or backward till you get your pinion to stay at the angle you want . And this will help you get your bars pretty close on length .. Its just my Farm boy way of doing it .. Never had any problems doing it like this .