Regas are extremely sensitive to being absolutely level. When slightly out of level the sound can be harsh. I guess this is due to rocking in the main bearing. So make sure it's absolutely level.
Also, since you bought it has it ever been stored in a manner that might allow any oil to leak from the bearing ? Regas also are very sensitive to having adequate oil in the bearing, of a sufficient viscosity.
I think the power supply may be a good upgrade as speed stability is critical in LP replay, but unfortunately speed stability is not the strongest element of the Rega.
Also, since you bought it has it ever been stored in a manner that might allow any oil to leak from the bearing ? Regas also are very sensitive to having adequate oil in the bearing, of a sufficient viscosity.
I think the power supply may be a good upgrade as speed stability is critical in LP replay, but unfortunately speed stability is not the strongest element of the Rega.