I was able to turn them with a nut driver. after I loosened a few, I did the rest with my fingers. I know the leak is from the rear of the motor obviously, its just such a tight spot to get into and look around. the mechanic said to clean it off real good and run the motor and check it. I tried but there seems to be no room to do this (cleaning). I might need to invest in a small telescoping mirror or just start ripping stuff apart to get a better view.