I'm not a 3 but 2b and have the same problem only the opposite side, my left side is noticeably much wavier and well better looking than on the right..
Saying that I have a mad habit of twisting my hair and putting it on my left side so when I have it out the right side looks weird .. if that makes sense.. perhaps you might spend more time on your right side than left.. ??
"2 Something ATM"
Coarse, Medium- Thick, Normal Porosity
Low 'Poo: curash soothing oatmeal conditioning shampoo
RO: tresemme naturals moisturising conditioner
LI: tresemme naturals/kinky curly knot today
Seal: mix of shea butter/coconut oil
waist length hair & finding a sexual cheapo leave in conditioner for both me and my daughter