  The measured forward slope in elastic and inelastic leptoproduction of vector
mesons differ by a substantial amount. In an attempt to describe this
phenomenon we construct a two radii model for the target proton, and estimate
the effective parameters of the hard Pomeron obtained from a pQCD dipole model
with eikonal shadowing corrections (SC). We show that the SC reduce the
intercept of the hard Pomeron and generate an effective shrinkage of the
forward peak and a diffractive dip at $|t| \approx 1 GeV^2$, which appears to
affect the value of the experimentally measured slope.
