I recently had to take the right side cover off of my transmission so that I could fix the oil level hole. When I went to put it back on their was a bad grinding noise. I found out that the 1st gear is rubbing against the clutch and it has a lot of in and out movement. If I push the gear shaft in it does not rub but it will go back once I put the cover on. My question is should there be that much movement and why would the gears be hitting the clutch?