Huh, didn't notice any mucking. Dragonfruit is, to me, anyway, pretty smooth. And at 70%VG, can't blame any harshness on the PG!
I'm with Fran, maybe start (restart?) with a simple single strand coil around 1 - 1.5 ohms. Wet thoroughly before final assembly, and start around 8 watts to give it time to settle in. Getting comfy with the "simple" coils first. While 35 watts may or may not be needed for that clapton, that much power will vaporise a LOT of juice, and maybe it's just the massive amount that's shocking your system.
And in general the higher the power applied, the more air you need to cool it back down.