Bill, if you do not have leakage I wouldn't worry. New seals can conform to a moderately worn crank. It takes many thousands of miles for the rubber to make those groves or to make them deeper. Often you can move the seal depth slightly forward or back so that the seal contact is in a fresh part of the crank. Different brands of seals may also move the contact spot slightly. The repair sleeves are a good product to fix deeply groved cranks that there is no hope of sealing with a fresh rubber seal.