  Using quasiconformal surgery, we prove that any primitive,
postcritically-finite hyperbolic polynomial can be tuned with an arbitrary
generalized polynomial with non-escaping critical points, generalizing a result
of Douady-Hubbard for quadratic polynomials to the case of higher degree
polynomials. This solves affirmatively a conjecture by Inou and Kiwi on
surjectivity of the renormalization operator on higher degree polynomials in
one complex variable.
