My automatic seat sometimes, gerks as it adjusts to my preferred setting. on 1998 Jaguar XJ8

Its only occationally but has been happening for a couple weeks, is it going bad & what part would that be, if anyone may know. I'd really appreciate the help.

Asked by for the 1998 Jaguar XJ8
your seat track may have something in it or possibly needs grease. i found a golf ball in one of my cust seat tracks