vertical axle play

[WSSix]

How much up and down play should the axles have inside the housing? I can move mine up a little. Of course it slides in an out too since I still have the c-clips in.

I ask because I'm chasing a noise. It sounds like the rotor is scrapping as I go around a left hand turn. I don't have to be really loading the suspension either It's not a heavy scrape. More of a light weight one. It's definitely a rotational scrapping sound. I had the rear brake apart on that side and couldn't find anything. Happens whether I'm on the brakes or not. I'm fairly confident it's the rear driver's side anyway. Doesn't happen when going through a right hand turn.