in an rda (trident) i just rinse the wick/coil in water,pulse burn the water away and move to new flavor. never tried to vape through old flavor in an rda. also remember you can just hold down the fire button and vaporize it dry, then start with your new flavor. read more
You need to hold the mod and atomizer so that the vape coil can sit horizontally, one above the other. In order not to get mixed up, always brush from the left to the right. You can gently brush each of the coils for five to ten times using your wire brush. read more