One word of warning here...I recently replaced my rack with the JP
Group complete rack "kit".  When the inner tie rods were tightened to
spec, there was a small but visible gap between the peening flange and
the end of the rack.  Without the support of the flange, I could see
the threaded part of the tie rod fatiguing and snapping off.  Scary
stuff.

I at first suspected that the rack threads weren't deep enough, but
IIRC, in the end, the "positive" chamfer between the threaded part of
the tie rod end and the flange was larger than the "negative" chamfer
at the start of the threads in the rack end, so it was bottoming out
there before the flange could make contact.  Filing the latter chamfer
a little deeper allowed the parts to mate properly.  Sheesh....new
parts, same MFG...we shouldn't have to deal with this stuff.

So, just maybe double check your parts actually fit together properly.

Alex