Carriage with adjustable screw for 2020 Kossel Delta Mini

Small change with great effect: Enhancement of the original carriage part of the sintron delta kossel mini or He3D DLT-180. Fit standard m3 hex nut into the slot and fit standard m3 hat screw into carriage/nut. Helps adjusting your delta printer using your trusted allen key (the one used in construction of the printer).
Make sure the m3 hat screw correctly hits your endstop switch. This may require appropriate endstop holder, such as my Solid Endstop Holder for 2020 Kossel Delta Mini: http://ww