So I decided to take some time to clean fuel injectors on my R3. Once torn apart I decided to clean the butterflies (the set closest to me), Pardon my lack of knowledge. I noticed that I can turn them by hand and when I pulled my hand away they stayed in position (did not return to a set point). The were rather easy to turn. Are they supposed to do that (I Assume NO)? And if not what do I need to buy to fix it?