If I try to move the shifter into the R position with the clutch pressed all the way down, and the car has any forward speed at all, there's a terrible grinding sound. Obviously the solution would be to not move the shifter until the car is completely stopped, but sometimes I forget by accident, and I'm greeted by the bad sound. I was just wondering whether this is normal, because I thought that with the clutch pressed all the way down, it shouldn't matter where I put the shifter since nothing is in contact?