In the process of replacing chain and sprockets, and had some questions. Bike has a 4.5" rear, so that means the flat side of the sprocket should go towards the motor, with the little collar on the outside. This is how it is right now, but I feel like it's throwing the alignment off- checking alignment with a straight edge clamped to rear sprocket results in the alignment marks on the swingarm being off by about two notches. I know those can't really be used to set alignmnet, but would have expected them to be closer. The old front sprocket that was removed was installed in the opposite manner- flat side facing away from motor with the collar on the inside. Bike has only ever had a 4.5" rear. Am I missing something here?