Changing tracks. Back allen bolts holding back of skid came out fine. Back of skid droppped. Loosened two front 16mm bolts,both freed up. Backed out pto side bolt in front, came out no problem. Mag side bolt just spins, both directions. Tried putting back the pto side bolt but it does not want to grab the threads, bolt heads spins and not fully seated against tunnel. Both bolts are now spinning both ways. I tried lateral and vertical pressure on the skid as I tried to both tighten and loosen these bolts but nothing. What the hay? Help me before I pull the remaining hair out of my head.