On my build, fitting the u/j loosely bolted to the rack firstly, and then fitting the u/j coupling to the lower steering column worked without needing to get my drill out to modify a safety critical component (probably drilling is safe enough, but I prefer things to work as per spec. where possible).. However the steering column splines would not engage satisfactorily without the rack assembly being slightly articulated. John, perhaps stating the obvious, but just in case, remember that when you fit this lot make sure that the front wheels and the steering wheel are properly aligned before you bolt it together.