Okay I already know it has problems. I want to know what or if I can replace it with another. All the ones I have looked at appear different. I think that mine is shorter that the ones I see because they have 4 mount holes and mine has only 3 (I am posting pics of the difference) Last 2 pics are not mine. But I am wondering if the longer ones will work on mine? It looks like mine has a added piece inside so that the lead screw can be attached. This makes me think I could use the other style QCGB? I thought I would ask here for help. Thanks