If the typical car top transducer is used, You’ve checked the following;
*Tape guides- super critical
*Transducer/Hall effect lock rings for tightness
*Transducer CAT 5 plugs
*Sensors distance to magnet face
*Drifted or out of place magnets
*All wiring terminals to/from selector have been checked
*Module LVE or LVE1 (can’t remember if these are used on the 5000)