The blade grips have a linkage that is connected to it from the flybar part. Pop that off and when you shorten the linkage it lowers the pitch angle. The longer you extend it, the greater the pitch angle. I would have to provide a photo later, right now I'm at my fiance's house. She lives pretty far from my house. I'll post a photo tomorrow morning. But this method of shortening and lengthening the linkage attached to the blade grips also are used to adjust the blade tracking. While observing the rotors rotating and one blade seems to be lifting higher than the other, you can make adjustments to one blade angle to achive a proper blade tracking. It's also stated in the manual I think on how to adjust the blade tracking.