@ randym77: I've been noticing lately that displacement/bump values have been defaulting to 1 when a node is plugged into them. It might be a bug and can be overlooked if you don't check the Material Room on a regular basis.

@ EldritchCellar: Did you realize that there are node duplications for that material set up. Follow the connectors; you can only have one connector for each input and multiple connectors for each output. Looks like you have nodes hiding other nodes in the screencap. Someone didn't clean this up too well.