  A recent re-analysis of Whole Earth Telescope observations of GD 358 obtained
in 1990 suggests that asteroseismology of additional DBV white dwarfs can lead
to independent constraints on the important, but poorly determined,
^{12}C(alpha,gamma)^{16}O nuclear reaction rate. Data exist for several other
DBV white dwarfs, but relatively few modes are detected and there is often no
multiplet structure to aid in the identification of the spherical harmonic
indices (l,m). I use a new grid of one million DBV models covering a broad
range of masses, temperatures, and surface helium layer masses to investigate
the consequences of assuming m=0 for global model-fitting. I find that when the
spherical degree is known and the rotation period is of order 1 day, the
model-fitting procedure applied to modes with unknown m-values will still
correctly identify the_families_ of possible solutions, and has a high
probability of identifying the same globally optimal solution found when the
m-value is known.
