Using the Adjustable settings for aggressiveness on my Gillette Adjustable as a guide, where does my 1954 SS fall?:happy005
Charts have placed the red tip at about a 5 on the slim and fatboy, so my best guess would be around a 3. Don't forget to take differences in weight and balance into account. Just because the blade angle and exposure match, that doesn't mean the razors will automagically shave the same.