Tronxy X5SA Carriage upgrade

So I was having problems with the Tronxy X5SA in that the bed was not level and when I added glass, found that the aluminium extrusion running front to back was being pulled down by the Z axis linear rails and therefore the nozzle would touch the bed in the middle of the glass plate even with 0.5mm gap at the edges (I had move to manual bed levelling with an optical switch at this time and gotten rid of the inductive probe).

I also noticed the V Slot wheels were only touching on one side of t