yes there is
there is a large locking nut - cant remeber size 40-60mm and then another "bit" you can tighten-loosen that can set some sort of preload on the rack,
the nut faces rear of vehicle and is in the same area wheere the shaft from the steering wheel joins it
i adjusted mine last year as i have some "looseness" in the steering and getting a jolting feeling in the steering.
the adjustement, very minor fixed this.
i used a towbar hex-bolt as a tool to turn the adjustment part of it, as the end of these 14mm bolts fitted perfectly, and a stilson or molewrench to tighten/loosen the big locknut
it is in the max ellery manual i think