  We study the scalar perturbation sector of the general axisymmetric warped
Salam-Sezgin model with codimension-2 branes. We focus on the perturbations
which mix with the dilaton. We show that the scalar fluctuations analysis can
be reduced to studying two scalar modes of constant wavefunction, plus modes of
non-constant wavefunction which obey a single Schroedinger equation. From the
obtained explicit solution of the scalar modes, we point out the importance of
the non-constant modes in describing the four dimensional effective theory.
This observation remains true for the unwarped case and was neglected in the
relevant literature. Furthermore, we show that the warped solutions are free of
instabilities.
