Hi All. I have DS510M servos on my 500 Pro. I was double checking all the links and noticed when powered up there seemed to be a lot of play in the servos. I uploaded a vid to youtube so you can see. Fairly close up so highlights the slack. Is this normal? I was lightly wiggling one of the blades and rotated it around a few times to check them all. I had a crash recently and had to replace one and rebuild another. They all appear to be fairly similar. Can you adjust this play out?