Y-Carrier Base Plate for AM8 BLV mod (extended)

I am currently building AM8 BLV mod, but 10 cm longer MNG rails in order to gain at least 31 x 31 cm buildplate, thus I designed my own carrier plate. It will hold the bed using 15 x 10 aluminium U profiles, used to hang curtain sliders from ceiling

UPDATE: Belt holder modified to have 1 mm more clearance at idler side