sometimes when engaging first gear or reverse in my 172 (mk2), the gears make a slight crunching noise, and i have to attempt to engage again, it usually works fine second time around. also, at times it doesnt even get into first gear and i have to try a few times before it gets into the gate. should i call renault to get this fixed? its just that i find this a bit dangerous, especially if your in a heavy intersection, needing to get away quickly and first gear doesnt get in....any help would be appreciated