I modeled a functionally equivalent replacement for a broken handle mount.  I printed in Polymaker Galaxy Black ASA.  0.2mm layer height with variable layer height activated for top surface profile for the best possible contour.  I reused the original screws to self-tap into the part.  Heat-set insert would have been nice but I didn't have them on hand.  Once installed the handle is solid.  The lower mount is the one that fractured for me but I replaced both to match.