K-frame and Lower Control Arms Fitment
I'm very late responding to your post. I had a 70 Duster that I installed the K member, QA1 lowers and adjustable strut rods. The passenger side went together like it had eyes but the driver side had exactly the same problem you are seeing. I contacted QA1 about the problem and they said they have never had a report about that problem before. They said they would talk to their engineering department and get back with me. Guess what, crickets. I called and asked for a supervisor and told the whole story. They sent me another set of LCA's but that one driver side also had the same problem. I suspect the K member hole for the strut rod is incorrectly angled.
What did I do to fix this? Well, the "fix" I came up with was really dumb, but it worked. I had a friend with a torch heat the strut tube and bent it up (was almost an inch as I recall) until the bolt would go through the eye. I don't care what QA1 said; something is off with their manufacturing setup. Oh, another thing; the QA1 gold adjustable strut rod end that goes into the LCA is much smaller than the diameter of the loop they made on the LCA. Dumb. I sent the strut rods back to Summit and ordered the adjustable rods from PST.