  We report three distinct regions within the A-phase in Fe-doped MnSi, based
on the evolution of magnetoresistance and the Hall effect as a function of
orientation of applied field. Fe impurities as pinning centers and crystalline
anisotropy are found non-negligible only at the boundary of the A-phase.
Electrical transport characteristics unique to the A-phase not only remain
robust, but also indicate a freely rotating skyrmion lattice, decoupled from
underlying crystal structure or impurity pinning.
