i didn't use the arc but had some issues initially with the hawg wired. i learned that whatever rings you use these speakers are a tight fit. what worked for me was to loosen the inner fairing bolts just a little so they are snug but not loose. i then fitted the fairing up and flexed things around so the fairing fit. next removed outer fairing and retorqued inner fairing 4 bolts. after that i was able to fit the outer fairing. it is a tight fit and you need to be very familiar with how the inner and outer fairing mate together, paying special attention to the fin tabs.
good luck, i know the arc rings work, as do the hawgwired. just take your time and it will eventually make sense. it is tight, no getting around it.
2012 FLTRX - stage 1.5 headwork, dragos 580 cams, 10.25 comp, FM stage 1 intake, dragula 2, TTS, 13" windvest, 14" evil apes, JRI 12" shocks, progressive monotubes, hertz and alpine, hawg wired amp, custom LED gauges, custom dynamics LED signals, lots o' powder coat
San Diego, CA