regarding operation of bell 412
hi . i am a bell 412 EP maint crew. i have questions regarding operation of my heli. firstly during takeoff at 100% Nr the rpm droops more than 2% which is not usual and secondly in one of my heli ITT of no 2 engine is always 50 degrees ahead of no 1 engine and it fluctuates alot during collective manipulation.i am operating at 5000 ASL and OAT is normally 30-38 degree C. plz help me with it. regards