Odd Problem- Hot Vapor, Doesn’t Hit Temp, Resistance OK

I have an odd problem. Or maybe a silliness problem.
I have 2 EXO RTAs and 2 OBS Engines.
I have identical claptons in all of them, bought them from Adavnced Vape Supply.
One EXO is single coil deck the other dual coil.
I have had nothing but trouble with the dual coil deck on the EXO.
I put it on a G Class, read the resistance, it is .21xx, put it on an ML Class, same. Put it on a DNA, same.
I put the Engine on the same mods, same resistance except for the xx part of the number.
So, I set…

Odd Problem- Hot Vapor, Doesn't Hit Temp, Resistance OK

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