Experiments on the JET tokamak show that the wave-induced pinch effect in the presence of toroidally asymmetric waves can provide a tool for controlling the profile of ion-cyclotron-resonant 3He ions. Direct evidence for the wave-induced pinch has been obtained from the measured gamma-ray emission profiles. Concurrent differences in the excitation of Alfvén Eigenmodes (AEs), sawtooth stabilisation, electron temperatures and fast-ion stored energies are observed. The measured location of AEs and the gamma-ray emission profiles verify the fast ion radial gradient as the driving term for AEs.