The 2-3/8" was 38° per the old DC book as I recall. It translates to 1/16" per degree. Using that logic, 36° would be 2-1/4"
36° = 2.2776546738526" actual.
I'd verify the TDC mark is accurate first. When I have that I also mark the inner ring to the outer of the stock balancer to have a visual reference of any slip.