My rigger suggested the bolts should be replaced because they could/would fail from inside out. However, he went on to say that he reused the 1/4" thick triangular plate on the split backstay since it did not show any sign of crevice corrosion. So, if I don't see any visible issue on the U bolt, can I reuse them? Or, does work hardening create such a stress that these could go even though they look good? My real problem in Rig Rite's price. They have them in Stock, but want $289/each. I sent an email asking if that was for all 6, but their response "Sorry, all prices are each, unless otherwise specified." Ouch!