I have the same issues. I use all the same products for my whole head but realized my technique was part of the problem. Super soaker was a bust because I couldn't get my 2C waves to clump right. Ended up with a mess. But the 3a in the front looked great I found that putting on all products soaking wet while still in the shower helps and doing everything upside down, when I get out of the shower I flip and add more the the back canopy. Seems that is the area that gets missed when I add on product upside down, then I flip back and scrunch like crazy. They never match all the way but its much better. Still working on the frizz back there tho. It may never go away completely.
2C/3a, Medium Texture, Normal porosity, High Density, Normal Elasticity (so says the LCLF Hair analysis)
Co Wash: As I am
RO: Yes To Carrots / Ion
LI: Biotera / Samy Big Curls Defining Cream
Gel: FSG, Volumax (Original and Mega)
Color: Henna
Tools: Diffusing