The implementation of quick temperature cycles over the temperature range 2-40K in g-picoline has lead to the first observation of a redistribution of scattered intensity in neutron scattering experiments caused by Haupt-type cross-polarization phenomena. The effect persists over periods of hours and it is independent of external magnetic field. These findings validate the model of a strong coupling between the tunnelling and dipolar spin reservoir, and weak coupling between the dipolar and Zeeman reservoir of methyl protons in g-picoline. Whereas it is generally agreed that the Haupt effect is only observable in weakly hindered quantum rotors, no insights have been provided to date into to the role of different rotor-spin-reservoir cross-polarization pathways. Motivated by this, we propose to use OSIRIS to perform 'Haupt' measurements on g-picoline N-oxide and lithium acetate dihydrate