This is meandering off topic from the original thread, but the secondary PE of 42 seconds seems to consistently show up in more than one G11T so I suspect it's an error intrinsic in the design
Allen we've discussed this a bit, and as you know PEMPro (and I suspect eventually PECPrep) is working on the 2 cycle pe correction which would adjust that out, it just needs to be finalized. I'm not sure what else you are looking for on this? it's repeatable, easily measured, and should be straightforward to correct with software.
B