I have lost the gun sight reticle on all my Fw190 fighters

[DFLion]

I have lost the reticle on the Revi 16B reflector gun sights on all my Fw190's. I have tried different head positions in the cockpits without success. Can anybody point me in the right direction to fix the problem. All other aircraft are ok?

DFLion

[DFLion]

Apologies, have worked it out - END, DELETE, PAGE UP, PAGE DOWN, buttons re-position the reticle to the center of the Reflector sight. I am trying to make all my controls the same throughout the IL2 Flight Sim family?

DFLion