Hi @OSUblake,
I will try out smooth scrolling today as you mentioned.
Regarding the x-axis issue, you can find it at around 0:04 of the video(https://www.dropbox.com/s/062qt3l9j2mc8lb/gsap-safari-x.mov?dl=0). I am attaching a screenshot. There is a white portion on the right side of the page when you scroll the first image first time.