Kick the bottom side of 4. 4 moves up table. Cueball slides off the bottom side of two and goes one rail into the stack. Try the shot out.
If you kick into the bottom side of the four, how is the cue ball going to hit the two and go into the stack?
It's got to either go down toward the corner pocket and probably scratch, or hit the side rail and come straight back across. If you kick at the four, you have to hit it soft and try to hit the 4 pretty full.