Extrusion does not match Controller position

[JasperBPT]

Hi,
There is indeed a difference. Controllers use the TF, and extrusion uses relative distance (distance / spline's length).
A solution, besides doing the conversion yourself, is to use a Path Controller instead of a Spline Controller, because it uses relative distances.
Did this help?

That seems to have done the trick!

Thanks so much for the quick response. Still learning just how this thing works