Just ran through maintenance on my machine as per the video instructions from Onefinity. Near the end of the process, we are to tighten with a 2.5mm wrench the inside and outside bolts for the rail bearings. The video only shows/mentions the Y axis, but the X axis bearings have - at least on the back side - the same 2.5mm bolts. However, the corresponding “outer” bolts (if they are there) are covered/concealed by the Z gantry assembly. Should one completely remove the Z gantry to get at those bolts??
John, personally I would not remove the z axis assembly to check these (thereby having to retram), unless there was evidence that they needed tightening. Seems that snugging them from one side should suffice. Onefinity may offer a different thought on that though.