if your a newer guy to nitro the break in bible might seem a bit confusing,
its really not to bad once you study it, but another option to avoid from damaging the dialed Werks engine you have, is you could always send it to
The Speed Shop and he can break it in for you, I am sure if you sent him your clutch he could also install it for you as well, that way you just get it back head over to the Werks thread and get help tuning it in correctly for your area. plus the Speed Shop prices are very reasonable. He has a thread on here as well. just a thought. the pullstart engines are a bitch to tune I do know that, dont let it turn you off of nitro when you have the best engine made right there with you.