hi all, thanks for having a look. my problem is, while trying to get rid of this line(where the unwrap seam is)-,


I gave my model a second unwrap on the top of his head where the line is.
ive used a composite material. the base textures are on mat 1 and the second unwrap and textures are on 2. ive turned off tile and show on back.
my problem is this,

The line is cover and the texture layered in nicely but there seems to be a problem with my opacity map(under the eye and nose.The channels that need to be on 2(the 2nd unwrap, the top of the head diffuse and opacity) are on 2. any help would be much appreciated. thanks. O