I guess I don't understand your last question. My H Pro never had the toilet bowl issue, it flies fine. My issue is the ST16 vibrating and displaying that GPS Lock was lost. This always seems to happen shortly after the first power on after I already have a good GPS lock. I power on the ST16 first, then the H Pro, while sitting on the ground after 1-3 minutes with a good GPS lock, the GPS lock is gone, shortly after it comes back. Once I'm flying the lock seems good, I'm just leery of loosing it just before or during takeoff even though I'm in Angle mode.