We got this configuration to work after about three attempts on my 2017 NG-2View attachment 2901142 .
First, switch the original bridge pu to the middle and the neck to the bridge.
Wire the P-Tone in reverse to the instructions. Fixes phase issues.
Good Luck!
Are your magnetic poles the same as mine? I don't see how this could ever work correctly on the A string the way the poles are.