i would like to say i was quite a critic when my fried ordered one i was like haha its a kit engine but my eyes were wide open when his fired on the 3rd flip and took no carb adjustment and my new dl 50 and i were goin around and around took me longer to get mine started than to break his in and its been a wonderful engine for him it was his first gasser on a katana then on yak never any issues. good engine[>:] wish mine would have been as good as his lol