First off, I am no expert with tuning the 1HCLs. That being said I have been using them since they first came out.
I would drop your D value down to D0.1. That will immediately quiet them down, and I found it to have little impact on the performance.
I would also increase your P value. The auto tuning function tried setting my P value down in the 20-ish range like yours and I noticed very poor performance. Just for testing sake I would try a higher number like R100.
The other thing that might help is to post a picture of your tuning graph.