how can it be loose in the esc? it is a female bullet connector cut with a slice that covers both sides of the pcb and is done with silver solder. You probably noticed how hard it was to remove....... not saying i've seen it all, but i've had 16 dji opto esc's and never seen this loose in the esc part. I've replied to those threads a few times, but then erased since i didn't want to start anything, but the only real thing that can go wrong is the spring that's on the motor side connector gets laxed and needs a bend like using a needle or dental pick and give a short tug to each of the cuts on the motor side... other than that, 2 pieces of metal with a nice snug spring can only do one thing, short together and met electricity through. if that connector was loose, it was bad solder and you pushed on it one too many times.... it is the natural place to pick this thing up, i still catch myself from time to time holding the esc in my forefingers and that's bad
In the room i'm standing typing this is 12 models. 3 complete dji fpv rigs, the zII 3 scale helis, 2 electric helis and 4 electric planks...... every single one of them has bullet connectors from the esc to the motor and there is zero faults..... they all get sent off where i could never get em again and i have zero worries about my bullets... 12x3, that's 36 failure points and no crashy crash
The wire side though,,, they mess that up, they always have. My kit was bought at christmas last year wheni got the arf, it was already outdated with 2215 size motors and black arms...... that one broke the motor wire twice from the above mention
But, i don't have a current dji arf kit so i'll take your word for it, it's just hard for me to push something i'm so unsure of as the connector themselves beeing bad...... these ones i get with suppo motors are piss poor, but have never failed. they come with $18 motors, there definately not anything special.....