Question about how to unscrew the Yocan Evolve Plus parts.

My yocan plus vape pen - I need to change the coil chamber, but the base will not screw off for the replacement. i tried soaking in alcohol to clean residue, using rubber discs to increase traction - Any tips on how to dissasemble a tightly bonded base from the coil chamber?

Here are some tips:
1. Try to use q-tip clean the connections multiple times. Sometime the residue make it hard to unscrew.

2. Try to wrap the battery with tissue.

3. Please try to hit the battery few seconds, then try to unscrew the atomizer.