MX5 NB – Circuit Scratches…

Hello everybody, with my MX5 NB Miracle, year 2000 (6-speed) the circuit is a bit “happy” i.e. when I switch in, I hear the gears snap in. When switching in the reverse gear I sometimes have to insert a different gear before. Can this also be due to the clutch? It has not yet been changed (140tsd km run). I would be very grateful for an info.