  We discuss how the stability of the theoretical prediction for exclusive
$J/\psi$ photoproduction has been improved through a systematic taming of the
known $\overline{\text{MS}}$ coefficient functions by accounting for a formally
power suppressed, but numerically significant, correction encoded within a
$Q_0$ cut. The phenomenological implications of this will be emphasised
meaning, ultimately, the possibility to include the exclusive data into a
global fitter framework to provide constraints on the small $x$ gluon.
