I just fixed mine! All you need to adjust is the three screws holding the needle beam in place. The angle of that wire is determined by the position of the needle when you are tightening everything up -- if you tighten everything up and the needle isn't at dead center, then 60 bpm will be WAY too slow. Use 60 because you can set it with a watch. I can't say i have it to a science, but I can say that it's all in where the needle is set when you tighten everything up.