Over the last few months I had a steel plate with one mounting bolt that broke (I think the head popped off) and another that one of the chains broke. So today I pulled the plates, brought them to the barn, and repaired them - I used a screw link to fix the broken chain on the one, and on the other I just removed the other mounting bolt and replaced the mounting bolts with a 'cold shut' on each side, and used the vise to squeeze them shut. Then reinstalled them and the girls and I took turns shooting the 6.8 at 225 and 400 yards.
Also - I suspected it would happen eventually - I broke one of my arrow shafts. Not sure how it broke, probably got stuck under something in the back of the SxS. So that'll get replaced soon.