No matter how hard i tried, i could not get rid of all the oscillation and wobbles with the 10x4.5 props that came with the SK450 Turnigy quad (it also came with 8x4.5, but i broke one, and was waiting for them to arrive in the mail). Anyhow, the smaller props fixed everything instantly, it flies great again, very smooth and stable and responsive without the kk2.0 overcorrecting everything.