Never found why this OP reading or the variable readings using the K5 and the Radius happened. I know it is not the atty coil as it worked in other
mod and in the coil tab.
This combo is the one I use every day, most part of the day.
I haven't had that problem since:
a) I try to keep the atty always really clean, taking away any liquid from the base area and the air control.
b) I tight the 510 pin just enough to being secured but not use a lot of force, just enough to keep everything in place. Always check the pin if I remove the atty from the Radius.
I will try to find Brandi's (from Provape) response from my last year mail backup and see if she mentioned something useful.