I bought a 2h Phantom 3 4k for my son (10yrs) to learn. The camera works fine, but the gimbal was shot - which we were happy with as it was cheap...However, unsurprisingly we are now motivated to repair the Gimbal unit, but the local DJI distributor is pretty unhelpful. One option is to replace the entire unit, camera and all for circa $250USD. The other option is repairing it. Is there a way to determine what the actual problem is? Or should we just bite the bullet and replace the entire unit....Cheers, Drew.