before you setup up your heli for flying 3D you should learn the basics of flying with a less radical setup...

regardless... don't worry to much about the two blades being the same, the pitch gage will give you a rough number anyway... if you use would blades, they might be warped....
do the final setup in flight, tracking of the blades first and than max climb-out rate without bogging the engine upside right and inverted... that will determine your max pitch... not the gage...

wouldn't worry to much about the bell if it is a new heli it will wear in...

hope that helps