Hoi.
Sorry if this issue has been appeared already. Couldnt find solutions, so here is the problem.
Situation is this, that we have a set of subtools, and we have to place them separatelly and carefully with tools>deformation>offset. When we face the need for retopologisation, we have to use zsphere. Zsphere appears to spawn to subtools pivot point, which hasnt been changed during tools>deformation>offset. The problem is when the single subtools symmetry is gone. Well symmetry is there, but the subtool is out of place because of the offset and symmetry cannot be used properly. So there is many workarounds for that, but couldnt find accurate or easy solutions.
Problem could be solved with clearing the offset movement with Transform> C.Pivot (Or something like that), then retopo the subtool and placing subtool again with tools>deformation>offset. But it is never the same, if u dont keep count of offset movements, and if the project is sensitive, where all subtool objects are placed in very strict positions. So there isnt any way to change objects pivot point and then spawn the zsphere straight to the subtools/objects pivot point? Subtools can be only moved with tools>deformation>offset? The cause of the problem is clear (maybe) but it would be nice if there is somekind of faster solution for this. Tool>Preview allows the movement of pivot point, but it seems to be inaccurate, if u have to keep pivot point perfectly in the middle of the object to keep symmetry straight. There isnt any snapping for that (Tool>Preview)?
Can everybody see the problem and the one futile step in the production of subtool retopologisation? This all is written fast (slow) and with bad english, so apologies from that. Also tried to solve this in very tired mood, so now with little more energy (still tired), used all that energy for posting here. Apologies again. Hope somebody can bring some fast workarounds for this.