I own a '98 Galloper which has recently developed gearbox problems. Sometimes you will get 10 good gear changes, then a very bad change for the next few. It doesn't seem to matter if the gearbox is hot or cold. Occasionally it's as if the clutch hasn't engaged at all. Other times it will be difficult to engage a gear & just crunch into gear. Also it happens mostly going into 2nd or 3rd gear, either going up or down.