It's normal for wavy hair to be straight at the roots. Some looser wave patterns don't even start becoming wavy until ear length. There's nothing you have to do about it.
2c/3a some 3b/Thick/Fine texture?/High Porosity
Currently trying out the CG method again as of 1/3/12!

Current Routine:
Co-wash/RO: Trader Joe's Tea Tree Tingle
Low poo: Giovanni Tea Tree Triple Treat (when needed)
Products: LA Looks Sports Gel and Curly Kinks Coil Jam