I have started going back and redesigning the levels starting with level one (start at the beginning). With the larger play area I have to change the values of various things to accommodate for changes such as the scrolling of the scene, enemy/player movement speed, and projectile travel distance. Lots of tinkering and changing numbers and positions of things. And I am going to get it wrong the first time, and likely the second and third times, that’s what play testing is for!