Hypercube Evolution Carriage 19mm Bearings

I needed a carriage for my Carbon Tubes with Drylin Bearings that have 19mm. and i also wanted it to be removable without needing to get any rods out.

tensioning only needs to be done from one side - dont understand why that is typically on both sides.
bottom bearing is connected with zipties - (warping in the printed parts seemed to make the carriage rods not perfectly aligned).

in the current version the bearing circles have a bit clearing (0.2mm) with 19.2 mm.