now you can use a gasket on that left side engine cover. i hated using the liquid gaskets that either let oil leak or require so much slime that it gets everywhere. ca-cycleworks now has these green, non-asbestos, fiber-based alternator cover gaskets for sale. plenty in stock and limitless rapid production available, too.
i'm so glad that i found a gasket making company near my shop!! and big time thanks to Guy Martin of MBP Ducati for supplying an OEM alternator gasket. btw, somewhere, i read that the area where my shop is, called the Miramar area, accounts for like 10% of all industrial production in California. it's amazing how much industry there is literally within walking distance!
note that those with fuel injected models will need to remeasure their sensor's air gap and reshim accordingly. the gasket is .016" thick and will compress to .010"~.014".