do those have adjustable damping? unless the end links aren't installed properly, you shouldn't notice more roll than you did before...it should be the opposite...
does the car bounce a lot now? or is it just body roll while cornering...start by selecting a stiffer damper setting if you can, although i'm not familiar with Ksports...
I just installed Tein SS coil overs about a month ago...and on the stiffest setting...seems like the car doesn't even have a suspension...let alone any body roll...its flatter than flat, but jumps rail road tracks and stuff...