I have tried, with no luck, to pull apart the OCC V2.
when taking them apart you need to use a tank base to screw the coil into pretty snug with fingers
then using a pair of pliers grip the outer shell verticaly covering the wicking holes and gently but firmly wiggle the outer back and forth while also pulling to remove the part
you can also twist slightly if needed but do not twist before the outer starts to move as you do not want to stress the thread by over tightening and damaging the thread in the base section
once the outer section is removed then unscrew the inner section from base use pliers if needed but be careful not to put plier jaw marks on the inner section as this will make refitting tricky and harder to remove when next needed
the first time is the hardest to remove the outer once done the next and future times are very easy
i have had a couple that were very snug but a little effort and they came apart ok
they are not welded as i have heard mentioned elsewhere just a very tight press fit
when outer is off and inner removed from base just take out the bottom pin and insulator grommet as you would with the older style and then pull the coil and wick from the top and rebuild
hope this helps
but do at your own risk i have pulled lots of these apart with no damage to base section of tank as yet