Has any one put a FMF power core IV Q on there bike? Is it louder than stock with endcap out? Does it have more power than stock with endcap out? Also the 600 is soft on hard settings. Have you guys put new springs in? 180lbs and working the bike hard. Heard of .45's for the forks and 10.5 for the rear. And what about SRC brace... worth it or no?