Suggestions
1. While off, clean the junk on the cover (wash in mineral spirits and let dry), adjust the chain tensioner, inspect the other componets.
2. Have a good toruqe wrench (inch pound over foot will give more accurate results for that section). Torque to the sequence evenly and doing it in steps to the proper amount.
3. Use Blue Loctite on the bolts threads after cleaning out the holes
4. If it is the paper gasket, silicon gasket sealer will help lessen the chance of leakage. If it is the O-ring type (like I still use), I just use a tad of grease to hold in place and torque to proper specs and in sequence.
5. Put a new inspection cover gasket on at same time for the outer primary if it has been opened up previously. If not and you do not mess with it, barring no leakage, leave it alone.
6. Recommend that you also put a new drain plug on it and torque to spec.
7. Fill up with the recommended primary lube (RevTech works for me).
8. Go ahead and get any other maintenace out of the way, air pressure, lube hemi-joints, adjust clutch cable if needed, check bolts, etc.
9. Start her up, make sure everything is normal and then go for a ride and enjoy the road.