Wow! Four P3Ps with bad gimbal boards? What is the story, or stories, behind that? For me, this is turning into quite the treasure hunt trying to find a replacement board. It sounds like you've been down the same road. It's frustrating that there seems to be zero help or support from DJI. There are very few private shops that seems to work on these things and I'm sure they don't want to waste their time with us DYI guys trying to save a buck. It appears like finding a wrecked one or someone parting-out one on ebay is the only viable domestic source....and then there's China, lol. I'm still on the fence. I didn't pay a lot for my P3 Adv, and it still flies but I just don't have any camera functions or telemetry. What to do? I'd like to hear why you made the decision to try a Chinese replacement.