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jetski
M_V
Quils and wedges like that are, by design, not an exact fit inside the steerer, there is nothing about the design that accounts for the alignment of the adapter with the steerer.
You'd have steerer through the bottom bearing and the poorly aligned (and not very well attached) adapter through the top bearing resulting in uneven loading of the bearings.
The actual steerer would only be supported by the bottom bearing and would be free to flop around inside the headtube, supported only by aforementioned poorly toleranced and weak joint with the adapter.