We always do slip editing, in special cases, when slip doesn't do the trick, we start streching things with warp functions. But only small parts, like single hits etc. Tends to mess up the low end sometimes. Be careful when you use it on bass DIs. Listen if it's killing anything important in the sound. If it's tolerable, do it. If not, stay away.
^^^ try and do a search or look through the stickies for tutorials. I'm too lazy to link anything but I'm sure a quick type of "cubase slip editing" on youtube will give you some meat to chew on