  Possible oblique effects from vector particles that are strongly coupled to
the known gauge bosons are calculated for the case of final hadronic states
produced at future $e^+e^-$ colliders, using a formalism that was recently
proposed and that exploits the information and the constraints provided by LEP
1 results. Combining the hadronic channels with the previously analysed
leptonic ones we derive improved limits for the masses of the resonances
that,in technicolour-like cases, would range from one to two TeV for a 500 GeV
linear collider, depending on the assumed theoretical constraints.
