My servo arm is moving, but nothing else is, i know it's probably just a screw thats too loose, or too tight , but what could it be?

Sounds like the servo saver is too loose. Watch and see if the servo saver is splitting when you turn. If it is then you need to tighten the silver wheel on the servo saver.

ok thnx i'll try that

Yup, that worked, thanks for your help