  Aspects of a flavor-changing W' model with right-handed couplings are
addressed in this paper in light of Tevatron and LHC data. Our fit to the
Tevatron top-quark forward-backward asymmetry and the tt_bar inclusive cross
section includes higher-order loop effects in the effective interaction. The
higher order corrections change the best fit value of the W' effective coupling
strength as a function of the W' mass. The consistency of the model is checked
against the shape of the tt_bar invariant mass distribution. We use these
updated W' parameters to compute the expected contributions from W't associated
production and, for the first time, W'W' pair production at the LHC. We do a
full Monte Carlo simulation of the tt_bar+X final state, including interference
between the tW' induced tt_bar j process and the standard model tt_bar j
process. Interference effects are shown to be quantitatively important,
particularly when the W' mass is large. The jet multiplicity distribution in
tt_bar-jet production at 8 TeV constrains the W' model severely.
