I discovered the same issue with the Hannigan trail reducer on my Kbike telelever. The fender was actually touching the fairing on full compression. I increased the preload about 3/8", it's better but still not sitting at the stock height when the bike was solo. Pops I like the idea of the spacer on top of the shock. Next time I have the fairing off I'll check the amount of threads sticking through the nut and give that a try. I have Hyperpro shocks, may have it lengthened when it's time for a rebuild, and I'll definitely go for the remote preload adjuster.