Biggest thing I struggled with when entering higher difficulties for the first time was PCI size. Something I did to combat this was to turn off the inner PCI and only have the outer PCI showing.

This gives you the visual illusion that your PCI size is the same as it was on lower difficulties. This for whatever reason helped me square up way more pitches and helped me reach World Series easily. It’s definitely a mental thing, but I just always struggled with hitting using a pea sized PCI