Thank you both for your help so far. I'm able to manually home with both of your suggestions, and have found that the reason for the separate moves on the Z motors was due to the motors moving out of sync. Upon moving in the Z direction one motor moves ahead of the other, causing the X gantry to come down on one side; then the other motor follows. Below is a quick photo of my printer. Do you think my issue is because of the Z motors being placed in different positions, or could it still be a configuration issue?
Thanks so much for helping me get this off the ground.
0_1550365371247_IMG_20190216_185505.jpg
EDIT:
I figured it out! My Z leadscrew steps per mm were completely incorrect. The firmware was set for 5mm leadscrews & needed to be manually adjusted before uploading to the RAMPS board. Sorry for taking up your time. I appreciate your help though. Now on to configuring the BLTouch...