2002 A/C Control Selector Messed Up

[Nasahul]

While attempting to change the bulbs in my climate control area on my 02 mustang, I somehow have made it so where now my a/c temperature selector will not rotate fully all the way to warm. It stops abruptly about 1/2 way over when rotating it to the right. As a result, the cool air will also not get all the way cold, even though you can rotate it fully to the cool selection on the knob. I have no idea what I could have done wrong, and I am a total novice with a lot of this stuff, so any help/pictures/videos you guys could give me would be a huge help.