So tinkering i fixed the missalingment of the revi gunsight so if you want to try it you should go to:  C:\Program Files\Eagle Dynamics\DCS World\Mods\aircraft\FW-190A8\Cockpit\Scripts\Gunsight_REVI_16B\Indicator 
open the: PilotSight_page   
and change this lines   
reticle.material		 = "INDICATION_REVI_16B" 
reticle.tex_coords 		= {{0,0},  
						   {1,0}, 
						   {1,1}, 
						   {0,1}}   
to  
reticle.material		 = "INDICATION_REVI_16B" 
reticle.tex_coords 		= {{0,0},  
						   {44/42,0}, 
						   {44/42,44/42}, 
						   {0,44/42}}   
%5Bimg%5Dhttps%3A//i.imgur.com/B5sW3ZM.png[/img] 
Note this is not a proper fix, since the auxiliary sight is still missaligned.