Wasn't wrong so no need to apologise - understanding of intent differed between the parties involved. If you find a problem with parralax and it needs to be fixed permanently buy a scope that has the appropriate correction. Adding an cheekpiece to hold your head in the same spot isn't going to be reliable under all field conditions and positions. Adjusting the scope position to reduce the FOV, as a permanent solution, is a stupid idea. I reckon that whoever does this would also recommend licking the lens to clean it. (Hint)