Effect on RF adjustments when..........

......switching lenses. I just now put the Industar 26 on my Zorki 2C and noticed the slightly different tabs inside the mount flange that regulates what we see in the RF window.
Can too much switching throw the RF out of adjustment or should I not be concerned.
Thank you,
John

Switching Russian lenses in Soviet RFs do not alter the rangefinder acurancy but some original Leica and Canon lenses can deflect the sensor pin (or triangle) of range finder and cause damage.
Lenses are screwed on only when set at 1 meter (or closest)distance position.

Thank you Luiz.