I was practicing inside english tonight. When I hit the following shot with speed, I was literally needing a "full ball aim" to make the object ball. If I was using outside on the same shot and factored in the same amount of deflection, I'd be aiming @ a quarter ball AWAY from the object ball - I mean I'd be aiming at, and IMO shooting a whiff! What's up with that? (I also did the mirror image, so I do not believe it is a dominant eye thing)
I'm surprised nobody has picked up on this yet. I found your problem and highlighted it.
The highlighted sentence isn't true. You're compensating about twice as much on the outside shot as the inside!
Your problem is perception. You perceive adjustments toward the thick side of the cut as being larger than they are, since you're not as accustomed to adjusting in this direction. But you're used to outside english, and you're very comfortable with adjusting your aim thinner to compensate for the squirt.
So when you've adjusted to "full ball" to make the shot with inside, you think you've made a huge adjustment, but it's actually not that big. So then you make a huge adjustment on the other side, and you've over-compensated.
-Andrew