The width of the Type 98 Optical Gunsight in the new A6m5b is correct. Aprox 95mm. The design was taken from a Revi3C. Make your custom gunsights for the Type 98 with a 90mil outer ring size. You may want to raise your cockpit center view up a smidge. One of the simplest Type 98 graticules to do is a 90mil outer ring. 50mil inner ring. With a bisecting cross hairs. Many of the other japanese graticule get very cluttered and busy unless you go to full zoom.
How to use mil in making gunsights.
512x512 black bitmap (2pixels = 1mil).
Use an elipse tool and your 90mil ring start point is 166, 166.
Yellow and orange show up better in the game.
Include a xxxxx.mil file with your xxxxx.bmp file.
Place 256 in the mil file.
Your 90mil ring will size properly.
To keep your lines from being buzy and cluttered. Keep them to a minimum of 2pixels. Using a blur is not really necessary because it will increase the width of your lines which will again make them look busy and cluttered in the game. The "GO Boom" end results are more important than how your finger nails looked getting there....