It doesn't matter how many motors I've built i always get butterflys when I first start them. there has only been two that something happened on start-up cams shaft turned into broomsticks and it was when they removed the zinc out of the oil and no one was aware of it. I blamed comp cams they asked me questions even the type of oil and every thing was good , I called another cam company and they told me about the change in oils.
nice looking motor