Display an improper fraction within a custom format.

I'd like to format improper fractions within a custom format. The "fractions" has most the intended behavior, but I need to tweak it a little bit, to display the inches symbol (") after the fraction.

I see I can change the .## to display as a fraction so 6.5 becomes 6 1/2". I can then display only the fractional portion when it is less than 1 so 0.5 becomes 1/2" not 0 1/2".

However, when the value is an integer I have an issue, 6 displays as 6 0" instead of 6". This is not the behavior of the "fractions" format, and it's certainly a confusing way to display the info since its easy to confuse with 60".

Is there a way to not display the fractional bit when the number is an integer?