Using Hinge Joint 2D with scaled UGUI

Hey guys,

I've configured a few HingeJoint2D on a bunch of UI elements (leg parts of a guy on a bike). The auto configured joints work with my custom resolution of 2440 times 1980 or something, on which I've setup everything.
The problem arises when the resolution changes from that to a different screen resolution. All UI elements get scaled properly due to the canvas scaler set to scale with screen size, but unfortunately the joints do not accommodate for that and seem to stick with the old configuration, pushing everything far apart on smaller resolutions.
How can they be configured so they scale along with the canvas scaler?