If you want you can use a metronome, something which really helps me when I practice, and make up some speed excersises or something. They dont have to follow a fancy scale, they could just be little chromatic licks.
I was stuck learning how to solo, and before I know it I had come up with dozens of different excercises. Now I can tap and everything.
One other thing you might try are the columns in magazines like Guitar World. Sometimes all those big guitarists will show you speed excercises and stuff like that.