Hey guys, I want to buy my first Phantom, already owned a few brushed toy-grade quads'. I found a Phantom 1.2 and I'm not sure about buying it or not. I don't know much about Phantoms, i know there's a lot of revisions 1.1.1 , 1.2, 1.2.1, 2.0, etc, and I don't know if the 1.2 is a good revision. Also, the seller is giving me 2 gimbals, a Tarot T-2D that doesn't work and a chinese one I think that he says it works. But he says there's a problem with the controller board of the gimbal ( I think) he connects some pins and after that the drone may shake when in flight. He says if he doesn't connect the gimbal there's no problem with the drone. What should I do? What may be the problem?