Our x-home sensor had no grease but did have some scratches? We cleaned and touched up scratches with white enamel paint. Works fine now. Thanks Hugo! and to all who replied. Mike Hi Mike Check your x-home sensor. chances are it got some grease on it and its not reading the surface of the carriage when its searching for home on power up. Hugo Torbidoni VISIT OUR WEBSITE ! @ _campusemporium.com_ (http://www.campusemporium.com/) Campus Emporium Mike & Bobbie PH 540-552-1051 FX 540-552-2464