hello all, i purchased my first harley, a 2011 fatboy lo, a couple of weeks ago. in my excitement i ordered a set of vance and hines shortshots for $510 delivered from the states as harley heaven wanted $1200 fitted. was hoping to install these myself, until i saw the exhaust valve. does anyone know what i have to do with the exhaust valve to put the new pipes on or is it best to let harley heaven do it. any help would me much appreciated. thanks.