Hi All. OK, so the belt on my 7 needed changing. So I stripped it down, shims are sorted, One of the cracked plastic oilers has been repaired, got an Old ML7 user's guide.. But one tiny bit of a pair of tiny nuts escaped.. I have shown it to a few people, and been met with blank looks. Not threaded, square nut, appears to be made of brown plastic.. What's it made of! Blowed if I am annoying RDG or parcel farce for such a tiny item. Any clues? Hopefully the pic will upload, but it is hidden within the ball joint, to the RHS of the primary drive spindle, clutch and flywheel on other end. It is part of the mechanism that goes L & R, small lever that engages. Not the One that you pull up and down to engage the friction drive. My guess is Tufnol.. Not Paxolin..mm