Was having trouble finding something new to try so I ordered the SMOK TF-RTA.
Put it on the Pioneer4You IPV6X.
0.14ohm Clapton Wire Coil Preinstalled 2mm ID
This is the G4 QUAD coil.
Ignore that the CM 521 displays 0.05Ω, it is actually 0.15 once on the mod.
I have to admit I was a bit surprised...