Building kit and would like to add this.  Nik does not have a layout, but referred me to schematics on site.  Only layout which has this switch in it is the OTS FM Modern Eagle, but values on that are different than for the HRM BM.  It would appear simple enough to add the extra components for the switch as per the FM Modern Eagle layout diagram, but I am not versed in amp design so cannot confirm this would be functional for the HRM BM.  Can anyone help verify that this will work?

I've searched this forum and at Amp Garage, and while there is plenty of discussion over the merits of having a LNFB switch, there are no applicable layouts which I could find for the HRM BM.

Thanks in advance!

Mark