Rotor blur not working

[mossman1223 1]

My rotor is turning alright, but the rotor static mesh doesn't fade out; both the static mesh and the blur texture are visible at all times.

Here's the relevant sections definition in CfgModels:

sections[]=
	{
		"velka vrtule",
		"velka vrtule staticka",
		"velka vrtule blur",
		"mala vrtule",
		"mala vrtule staticka",
		"mala vrtule blur"			
	};

Rotor is assigned to correct selection group names.

I have the entire rotor (shaft, static, and blur) in velka vrtule. Only static mesh is in velka vrtule staticka and ditto for velka vrtule blur.

Ditto for mala vrtule.

Any idea what could be wrong?