Carrera Go controller replacement button

This is a simplistic replacement part for the Carrera Go controllers. If the original knob breaks away, in the non-turbo mode the car goes too slow as the pushrod cannot be pushed far enough.
For the replacement one needs to cut away the top end of the pushrod thoroughly using a cutter knife. The end result should be a proper H-profile (seen from the top, as shown in the picture). The printed part can be then fixed on the original pushrod using a drop of gule from the glueing gun (but be quick when fitting the parts together). After having applied the glue I quickly pushed the button completely down to make sure that it is fully seated.
I hope this saves some controllers from the wastebin. I include the parametric source code for your convenience.