Hi stuboy64,

Sounds like you need to learn some new scales! I've completely hit plateaus like that before as well. I highly suggest learning some new scales, check these out:

Jazz: https://www.guitartricks.com/lesson.php?input=21866&s_id=1757

Minor/Major in Rock: https://www.guitartricks.com/lesson.php?input=20152&s_id=1586

Another really great way to boost your lead playing is to study other guitarists, or songs with great solos. Check out our songs page and find a song with some leads that you like and learn how to play them.

Hope that helps!