I'm going to differ here. I've had to buy a brand new set of gears for customers reels before because of this issue. A reel that was perfectly smooth, after service was grindy. It doesn't happen all the time, but once you buy a few sets of gears out of your own pocket you won't let it happen again. It's fairly simple to do. Start by removing most parts from front of reel. With the pinion gear still in place, use a scribe to scratch a line in one flat side or the other. Leave something holding the pinion gear in place. DO NOT LET IT SLIP FOREWARD AT THIS STAGE. Now remove most of the screws holding the sideplate on. OK, now you need a thin pointed stick. A pencil might work, I've got a 1/4 inch dowel with long sloping point. Insert the pointed end into the sidecover through the left handle opening. This can be a two person job at first untill you get the hang of it. I hold everything together, remove the last screws, hold the stick tight into the side, then wiggle and lift the side cover up. Move reach in with one finger and hold the drive gear down, that the stick is currently holding down, then lift side cover off the stick. Now the reel is open. Rotate the pinion gear with flat side that's scratched facing exactly up. Then use awl to scratch a line on the surface of the drive gear matching up with anything inside that you can remember exactly what it was pointing at. Now take everything apart. To put back together, put pinion gear in same position, then drop drive gear in with it's scratched line pointing at your marked location. Might sound difficult but entire operation takes a minute or two tops.