Toka joint question

When I create a joint, I want to reposition it from
time to time,
but
I have found this almost impossible if you do it after
you call the Tokjoint_enable for the joint for the first
time, if you move it after that, the frameA and B return
the position perfectly but you see the RB are turning
around strange points, not around the frames...

The only solution I have found is deleting the whole
joint and creating it again in the new position but
may be I'm missing something ...

any suggestions... ? :)

Thanks!
Paolo.