  We discuss the dependence of the results of renormalized perturbation theory
for dilute polymer solutions on the choice of the uncritical manifold where the
perturbation series are evaluated. Special emphasis is given to the influence
of polydispersity corrections on the results of one and two loop calculations.
For monodisperse solutions we establish that after a Borel resummation the
dependence on the choice of the uncritical manifold decreases when higher
orders of the expansion are taken into account.
