hello
i don´t know, if you can bolt a e34 steering box in a e32 ( i beleve yes, but not
sure) it´s possibile that the reason for your no return steering wheel is
a bad front suspension ( chamber, caster, toe in and so on)
bye
peter
have you checkt this....
http://www.7-forum.com/modelle/e32/lenksaeulenspiel/
this link is also very,very good
http://bmwe32.masscom.net/ ( go here to suspension and steering)