I started with a flat plate for a stroke reducer. It fit in front of the mount for the valves. First off the push plate rocked a bit vertically when it stopped on return, an 1/8" or so, which also stressed the rod/push plate bolt. The rod mounts loosely in a cup on the push plate, held by a vertical bolt. I used a low grade bolt on purpose, replacing it a few times a year. Second, after months of use, it broke the weld on the valve mount where it connects to the beam with little more than spot welds. Stroke reducing collars worked very well without issue. If a piece jammed on the wedge, the collars were easily removed to allow another piece to be used to push on one half, or one side, of the stuck round and that usually cleared the wedge.