DC/Group Scale Along Object Axis?

[placidfury]

Question: Is there any easy way I'm missing to scale a DC or group along the instance's own axis?

When you perform a scale transform, I know you can choose the origin point, and the scale for each axis. BUT, when the instance has been rotated, know scaling along say the green axis will give you skewed results. Is there a way to easily scale along the INSTANCE's green axis and not the model's to prevent unwanted skewing/stretching?

The way I've been doing it, I rotate the object back in-line with one of the model's axis, scale along that axis, then rotate back... but this has always seemed silly to me.

Thanks!