Rotor Noise in Daytona?

[clarencek]

I've got a D series Sub LV, when I shake it, I don't hear a thing. It runs about +2 sec per day.
I've also got a Z series GMT IIc, when I shake it, I don't hear a thing. It runs about +1 sec per day.
Finally, I've got a M series SS Daytona, when I shake it, I can hear the rotor. It runs -5 sec per day.

Obviously the Daytona's movement is very different from the sub and GMT, but is that consistent with other's daytona's?

Any feedback from other Daytona's would be appreciated. Thanks!