If your neck pickup is readint 7.7-7.9 I'm pretty sure that is not a Walter.
I know it seems off but the reading is jumping all over the place. It only settled at 7.76 and seemed to jump around between 7.7 and 10. But also jumps up into the teens and beyond. I wrote 7.76 because that is the only number it settled on for more than a second. 7.76 would not be a Straightjacket either.
Meter is new (tests everything else accurately) within the year and is a Klein.