John you may be right on the placement of the insul-fleece. On the PLUQ I placed it between the layers and it helped. On my new setup it is between the insulation and the bottom of the hammock and seems to be warmer. May be the reflective mylar layer being closer to the hammock bottom. Wish I would have brought the new kit with me on this trip to N. Georgia, could have really tested it out last night, temps down toward freezing.
Most of us end up poorer here but richer for being here. Olddog, Fulltime hammocker, 365 nights a year.