Would you want to raise the PM dose a little and see if that helps bring down the AMPS? I think it's safe based on the +4 spot check from the other night. It would be nice to have a little more data, but that one looks good to me at least. I know the evening spot checks are tough, but if you could get one in maybe once a week, varying the timing if you can, I think that will help fill out the picture, and help make sure the PM cycles are going ok.
That's my first thought. There are still other options like changing the timing a bit more, but that's what comes to mind to me as the simplest next step.