I have seen issues depending on which magent type used.
Large Neo magnets (disks, flats, etc) under the track too seem much too powerful, but tiny 3mm cubes seem to be 'just about right'
They look like they work like the cobalts.
Switch them to 'learn' then pick an accessory address. Then switch them to 'run'. Once you call up the address and toggle, they change...
Could be very simple..