I'm in the process of assembling my new SR2 quilt frame- the instructions are not great. The frame came with channel locks- they were installed on the right rear wheels of the frame. Then, I bought a stitch regulator- also supposed to be installed on the right rear wheels. They won't both go on- does this mean I can't use the channel locks in order to use the stitch regulator? Seems like a kind of bad design, if that's the case.