Ball bearings begin to fall out of the lead screw nut. See bore drawing with exposed ball bearings. The kit came with the wrong nozzle for the unthreaded end. Instead of a compression ring I have two identical ends that come with a threaded nut. The hole on this part is 10mm vs 8mm and will not fit the shaft. Look at the photo of the kit and compare it to the photo on Revain. i will return it
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