Thanks for all the replies. I will check the bolts today and see what marks they have on the heads. The nuts do have flanges and I have been torqueing the head of the bolt. I also found the manual that Carl n Susan posted but I wasn't sure it applied to OEM jacks since that manual seemed to be for an aftermarket system. However, using that manual I have torqued the bolts to 60 ft.lbs. at present. I think I will give Keystone a call and see if they can help as well. I will post a reply if I find out anything worth reporting.
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