You could layer your
Bump Map
and
Colour Channel
with a tile grid. By the looks of it, your
Colour Channel
already has a
Layer
operation so you should just be able to add it on top. The bump map you will have to copy down the settings, add the
Layer
operation, reapply the previous filter, then add the grid. You could also add the tile grid to the
Displacement Map
to get more definition.
Assuming the warping of your lines is caused by the distort operation in the colour channel. You would just need to change the order of your layers so that is it not affected.
Ling.