One of the X-Axis tubes sits slightly higher at one end.
It sits approx. 2-3mm high when comparing it to the other tube running parallel to it.
note: it only sits high at one end.
How to rectify this ?
Edit - I’m thinking of placing two wood blocks under the tubes to support them & loosen all the screws that hold the tubes in place and then re-tighten them. Having said this I think even with all screws loose one tube will still sit higher as perhaps the issue might be in the Y-Plate bolt holes not being drilled straight enough