i have had my nanocom evo for a day now, i have removed my three amigos and sorted my flashing mileage. i am getting a pulse/gush from my ace about every 20 seconds. read some where on here that it may be an air lock. how easy is it to bleed ace with the nanocom? the screen has the start and stop buttons on 3 steps. is it that easy? how long or is there a sign to look out for before i press stop.