almost see the bike bit as a warm up for your run! there's always a chance for you to help. this book is sure to get your kids loving science! in the link is a video of a cummins with a knock. i am so late with this that i missed the first one. we personally and carefully check that your new docs are 100% perfect, because quality and service are most important to us. for the extra soft touch and show ring shine. certainly seems to play out that way in our home! peace: is this the best we can do? 