Be careful when recommending fluxbusting. Not all manufacturers recommend it, here is VanDen Hul's FAQ on the subject:
"Q: Can I improve the sound by so-called “demagnetization” of my phono cartridge ?
A: NEVER demagnetize a M.M. cartridge with the replaceable stylus still inserted. It will ruin the mini-magnet at the end of the cantilever in its magnetic power. With the stylus insert removed you can consider it, but first read the rest of this answer:
From a more theoretical point of view, I think it is not wise to demagnetize. It is a short term effect with more negative side effects on the long-term. Your first experience will be very positive as also was mine. But after 2 record sides you have to do this again and it never stops. So you have become a serious victim. And keep in mind: the original cartridge magnet already puts the tiny armature in such a strong magnetic field that its magnetization is unavoidable, so why should you demagnetize? Also, since the magnet never is perfectly at center position but always has some offset, the mu-metal made centre of the coil system always holds residual magnetism and can’t become demagnetized. And if this is not enough: The current through the 20 micron thin coil wire is so small that there is no chance to build up any serious magnetic field to cancel the existing residual magnetism. What it only does is breaking down the magnetic domain boundaries in the mu-metal. This improves the magnetic resolution of the music. But after a short while these boundaries will be there again and the number of atoms per magnetic domain has only got bigger. So the magnetic resolution is worsening instead of getting better. So from the point of view: “I bought the thing and now I will use it”, you have to use it. The only advantage is that some crystal boundaries inside the coil wires are welded. But as soon as you move the armature by playing your records that effect is over again. So save the money and buy some good records. "