According to this http://wiki.badgerandblade.com/Double-Edged_Safety_Razors_Ranked_by_Blade_Gap you would need a 4 setting on a slim to approximate the gap on a de89I am using my de89 again. I really like it. Here is my question, what is the blade gap on de89 compared to Gil. Slim adj? I want to set the slim to similar setting as de89. Then I could swap back and forth.
According to this http://wiki.badgerandblade.com/Double-Edged_Safety_Razors_Ranked_by_Blade_Gap you would need a 4 setting on a slim to approximate the gap on a de89