I have a 20VN2219LP backup camera installed in my 2104 Jeep Grand Cheerokee. the power supply failed and the installer replaced it. Since he replaced the power supply, the lines on the backup screen no longer give me an accurate measurement when in reverse. they point up instead of back. the installer said that I should simply tilt the camera down more. this doesn't make sense to me as i would then be looking down instead of back. is there a way to adjust the angle of the lines in the settings of the interface?