Hey everyone, Not going to lie, I'm actually really psyched I finally have a reason to post here. I've been watching this forum for over a year trying to learn and figure out what I needed when I decided to go with my first CS build. I've flown Multirotors for about 2 years now, and this is my first venture into the HL category (even though right now I'm only flying a 5DMarkIII on the M5). Here she is: Anyways, I'm having some trouble with the GPS. Normal flight under No GPS has been wonderful and Altitude hold is working great as well. However, whenever I flip into PH, my craft will stay steady momentarily, and then start to bank pretty quickly left. I've tried re calibrating the GPS several times, each time pointing as close to magnetic north as I can, but still have the same outcome. Anyone have any ideas of things I could test?