gerbobness

hi there, i have been having the same problem with various mods on the launcher, everything is mostly fine until i turn my mouse even the slightest bit thats when i am forced to look down and cant control my movement, i have tried reinstalling the mods,the launcher and even java. i dont have this problem with anything else on my pc apart from techniks mods. if you could find a way to help i would very much appreciate it.