I've started painting the textures - a bump, specular and color map. The bump and color maps work as I intended but I'm having problems with the spec map.

I would like the higlights to be toned down in the dark areas od the spec map and bright in the white areas. I've put a layer mask set to specular ammount into the matieral where the specularity is defined but this doesn't appear to work. Modo also crashes frequently when moving layers around in the shader tree.

Any tips on how to apply a spec map?

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