Moving/Scaling component causes axis to change position

[eselick]

Hi

I've just finished making my first DC. It's square shaped with custom fields for the thickness and width of the parts. I'll use it to add trim for house models or as a sub-component for more complex components.

I thought everything was working correctly until I noticed that after scaling it for the first time the position of the axis for the component had moved away from the bottom left corner where it was originally placed. After this it became impossible to move the component in a predictable way.
Does anyone know what's going on here or how to fix it?

Thanks
Elliot

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TrimOneSide.skp