The original question keeps being avoided. It is not really interesting whether the gravitational deviations are predictable or not. The thing that is crucial for believers in the flat earth is to explain how there can be deviations in the first place.
Imagine a big plane being accelerated upwards at 1m/s2. Now imagine placing a few objects spread around the base of the plane, on the edges and in the center. The objects will have a constant distance to eachother, all having an acceleration upwards equaling the acceleration of the plane. Even if you bend the plane, they all will still have a constant acceleration. If you instead imagine the plane being a creased and irregular sheet of paper. No matter how much you fold the paper, all points on the paper will have the same acceleration as the paper, 1m/s2.
In order for the acceleration to be irregular, the distance between points or objects on the plane would have to increase. This would lead to stretching and tearing of the plane or paper.
The same logic applies to the earth. A constant accelerating force upwards is not possible, since the acceleration is observed to have deviations that can be explained by gravity on a globe, taking the centrifugal force in account. Of couse the gravity is impossible to predict perfectly, since the interior of the earth is not fully mapped.
I do not really understand what you guys mean with distance to the dome. Is "the dome" pushing the earth downwards with a constant force, which is different at different places? That would mean that the gravitational pull would increase as you move closer to the force, right? The only way to explain where the deviations come from, would be that they are faked by the scientist and the instruments observing them. This would further disprove flat earth theory through the reasoning of Occam's razor, since the deviations have been observed long before the Cold War, which if I understand correctly would be the reason "Round Earth" was "imprinted" to the public in the first place.
Finally: Instead of picking on minor mistakes in my text, please answer the major question first:
How can the flat earth have deviations in its upwards acceleration without "breaking"?