  Existence of discrepancies between experimental data and Monte Carlo
predictions for angular distributions in four-jet production via $e^+e^-$
annihilation has been known for some time at LEP1. As such QCD processes
constitute significant backgrounds to $e^+e^-\to W^+W^-\to 4$-jet production at
LEP2, we consider the possibility that an erroneous modelling of the helicity
structure of the final-state partons could affect the accuracy of experimental
measurements of the $W^\pm$ boson parameters
