I have been under the impression that I couldn't set the timers on the 2017 GS...I heard they were set and could only be changed to a preset longer time (which I didn't want to do in case it was too long). I have read a few posts lately that lead me to believe I may be able to customize the timer. I have Wakemakers piggy backs in the rear lockers. What would the process be to customize the timers? Thanks