Hi, is my gearbox on it's last legs? I have a 1998 Xantia 1.9td Series2 with 110k miles. All gears select fine apart from 2nd-3rd (ok when change is very slow) get a crunch noise and the same when changing down from 4th-3rd. All other gears are fine. Clutch is not slipping and have checked oil level in gearbox. Is my gearbox on it's way out, how long can it last like this and how easy is it to change or how expensive? Suggestions please as this is the only problem on this car. Otherwise drives great. Thanks Andy