CNCYEAH Ball Screw kit CNC parts SFU1605-700mm Ballscrew kit + BK/BF12 Kit + 1605 Ballscrew Anti-backlash Ball screw with Screw Nut Housing + Ball Nuts for CNC Machine

Update 6th May 2022:Since my original review CNCYEAH have been in contact and said they have found the problem and replaced the bearing carrier with a new design and asked if it would be OK to send me one of their updated kits to review.Not only can I confirm the new design now lines up perfectly but they have also improved the design with the addition of a grease point. Since the kit is otherwise good (I have been using it on my CNC for a few months now with great results) I have updated my review to 5 stars.I've added a couple of pictures of the new design, you can clearly see the alignment is now perfect and the new grease nipple.Original Review:I don't leave bad reviews very often but when a products engineering and quality control is so terrible that its not even possible to assemble the product I felt I had to.Take a look at the attached image, the fixing holes are so badly misaligned its not actually possible to get the bolts in. The hole in the lower left is the worst, its out of position by quite a distance but they are all pretty bad.Its not even that easy to fix as the bronze coloured component is steel so drilling larger holes is tricky.I would have left it one star except the bearings are actually pretty good...