  Extended simulation results and their analysis are reported in a strongly
coupled gauge theory with twelve fermion flavors in the fundamental SU(3) color
representation. The conformality of the model is probed using mass deformed
conformal finite size scaling (FSS) theory driven by the fermion mass anomalous
dimension. Two independent conformal FSS fitting procedures are used in the
analysis. The first one deploys physics motivated scaling functions,
complemented by a second fitting procedure with spline based general B-forms
for the scaling functions. The results at fixed gauge coupling show unresolved
problems with the conformal hypothesis.
