two area's of concern when wicking is first the density through the coil. Each fiber has its own characteristics, and density through coil must be correct for adequate juice supply.
The other area of concern is proper juice transfer from tank to build. Some fibers swell and can be choked off if to dense, others don't and like the channels or ports space completely filled. Have read that this fogger works best with the ends just past where the funnel chamber ends, and not all the way into and filling the horizontal base channels.
With some fibers one may have to put less through the port and channels than what is needed through the coil, or vice versa, depending on your build.
Just keep at it till you figure it out, tis what we all have to do when getting a new rba. All part of the learning curve.