Hi all, newbie here. I have trawled this and other sites for an answer, but most people say to remove the cable and have the flap open all the time. I would like the bike to be as it is intended, so quiet on start up and then have the valve opening at 4-5,000 ish rpm. I have removed the cover under the seat, turned the servo so the flap is fully closed, but then after a ride or two it is not closing fully again. How can I fix this? Would another servo help? Can I check how it is operating somehow? Would a new cable help? Is the cable adjustable? Can it be reset? Any help would be appreciated.