How to wick for the Profile Unity RTA? Three tips to get the best experience with Profile Unity RTA 1. Find the widest point of the wick channel, and cut the cotton along the virtual line that extends from the reference point to the rim of the deck. 2.Tuck the bottom cotton into the wick channel. 3.Now the cotton should look like this. Wicking Secret in One Word: make the upper cotton align with the vertical line by the wick channel, 1mm-2mm more is OK. That’s it. If you need more info on building or wicking, check out the Profile RDA blog here, it’s almost the same. Or you can watch our tutorial video (Video Link To-Be-Updated). This mesh RTA guarantees you the phenomenal flavor. It knows the profile of your juice. It locks all the tastes in. It gives you a flavor feast!