A baster will work but I didn't have one handy so I used paper towel to soak up the oil. If it ran fine before just clean everything up. Make sure you get the plug wires all the way on the plug. Also make sure the 4 dowels are in the valve cover that hold the gaskets in place. You can get new gaskets for the plug holes from Murphs'. Lots of parts for the Concours. Good guy and fast shipping for free.
Look here for Murphs'.
http://www.murphskits.com/catalog/product_info.php?cPath=1_105&products_id=34