and again i will put it out.. i am completely ignorant and the little lumps ur feeling could just be fat. i have little lumps on my lower abs. i'm 10% b/f and before when i was higher i coudln't feel them. are you fairly lean??
i used to be just like u, i just wanted my chest completely flat. and well with age, and a few supplements/drugs i used i got just that and i honestly can't say i'm completely satisfied. i have a really flat chest and it looks really shitty with shirts.
but then again i did strict dieting, hard core spot reduction with some over the counter penetrators and completely removed all the fat off my chest... which now i kind of regret.
point here is completely removing everything might not be the result ur looking for.