If you could give a picture or the pattern then someone maybe able to comment better.
If the area is small I will use the smallest blade I have a UR#1 or a 2/0 and then drill the smallest hole I can.
For the Ultra reverse # 1 the smallest hole is a 68 and 2/0 is 1/32. I think they are basically the same size. I just go off the chart at Mikes Workshop or the Olsen drill chart.
Don