The Wanhao Y axis ‘bed’ is known to be a little flimsy,
It’s made from pressed, welded steel sheet just under 1mm thick and notably flexes when adjusting the levelling springs
Some closeups below….
My new plan – Create a new Bed / Carriage with some suitably cut Aluminium from this bloke on ebay – 4mm thick and 325 x 325mm for just over £13, bargain!.
Once cut, this should be stiffer and more importantly, lighter than the existing carriage as shown below…….