redhot, its not an issue, ive raced both k&l and b/j beams in many disciplines from grass track to rallycross, and circuit racing, all had various means of adjustment, none have ever failed, these days i do preload the arms against side loads with the correct bushes.
they were of course proven by military use in w/w 2 with the kubel and schwimmer, long before we got to lower them with swayaways....
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