A screwdriver, being magnetic, touched a MC cartrigde and attracted it for a moment. Could this theoretically alter the performance of the longevity of the cartridge? Generally, does it make sense to keep MC cartridge far from possible magnets? How is it with direct drive motors? Do they interact with magnets of MC cartridges worsening their performance? I had an experience with a cartridge literally jumping on a record in one specific location (on any record at the same location), and the manufacturer explained that by reference to exceptionally strong magnetic field coming from the direct drive. This cartridge had a strong magnet also. I changed to another cartridge by the same manufacturer and there was no jumping.