Parts do NOT fit together properly. I broke the joint pretty well, I had to force hammer the bottom base into the bottom pivot. However, the two pieces should have simply slipped together. I'm a big strong guy. I also ordered a second strut thinking it could be fitted to a bolt on second seat but NO. Luckily I was able to use the second mount that came with the mount by finding the right size screw and attaching it to the correct seat anchorage.
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