I'm building a 14'x 24' timber frame cottage, using Jack Sobon's plans for a timber frame tool shed. I can't find any reference to how the rafters (4"x6"x12', on 2' centers) are fastened to the plate (8"x8"x24'). The plans call for notching out the plate, and then fitting the rafters into the notchs. Is this sufficient, or should they be pegged in as well. If pegged, should the peg holes be draw bored like the sills and bents?