I serviced my Shimano Curado E and Caenan reels today. I did the Caenan first and all went well. I then did the Curado and it did not have the anti reverse pawl in the reel. Reel worked fine and it was last serviced by Shimano about a year ago. So I clean and lube it and put it back together and it works fine. The part is in the schematic so I think it should be there but like I said the reel worked without it and works still. What can happen without that part in there? Did they remove it for a reason? These were my first attempts at servicing and it turned out well and was super easy to do. Any reel experts can comment on my situation? Shimano part number is 2404. The spot is there for it to slip onto just like my Caenan had.