Is there a mapping to control the midi offset value?

I'm syncing a few devices via midi from Traktor, and it works a treat, but I need the midi offset value to be mapped to a device so I can easily change it if needed, depending on the tracks and the accuracy of the grid sometimes across different tracks there's a noticeable difference in offset. I DJ hip hop, and some lo-fi stuff is all over the place!

I can't see the value as manageable via the controller manager.

Am I missing something or is it not going to be manageable and I'll need to manually change the value via mouse and keyboard?