before our shearing machine was shipped out from our workshop,we have adjusted the blade gap into the best angle.so,we do not suggest you to make any changes by yourself,especially you do not know too much things about it.this would take you more trouble. we do not want to scare you.there are lots of lessons from our customers. of course,you must ask if we do some help through phone or words.we think this is very difficult.because this need experience and skill of our engineer.we can not show better through email.maybe we can do something through video.we will send it when we have spare time.