Hi guys i'm new here and i'm from Italy, i've got a problem with a grinding sound from the gearbox in my vespa et4 150. I've alreadt replaced all the bearings without any result. The noise seems to be caused by the rear shaft, the one where you put the clutch (sorry for my bad english and for the horrible explanation) In fact if you push the shaft inside the gearbox, it will make a really loud sound. I've found only the discussion that i've put in the photo, but it's from 2012🥲. Any help would be great guys, the vespa is working great without any power loss, but i'm scared that sound will cause a failure. Sorry to bother you all. Thanks again
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