Yes, I was looking at your project yesterday, but I did not find anything new. However, there was one issue perhaps. The White Light source bandwidth depends on the sample rate (Nyquist theorem) and I found that in your original project some of the gratings were out of the bandwidth of the white light (essentially ineffective). Fixing the problem did not help with the MQC code in your original file, but perhaps that is the issue in your new multi diagonal code project.
Do you by chance have a link to a reference paper that you are basing your MQC project on?
Regards