I also received the tow hook bars from that_guy from his last batch and recently had a chance to try them out. I went with the 1up rack as well, and ran into the same problem mistressmotorsports did with the 1up brackets not fitting into the grooves on the bars. I just had to shave maybe 1mm off the side to get them to fit.
After that everything went together perfectly and the bike rack feels rock solid. Quick and easy setup and tear down. Very happy with this solution.
Thanks that_guy!
