Yes, since the bucket tips at .04. But if you have increased the collection area by 4 so therefore an actual .01 rainfall is collected in the tip buckets as an .04 then the gain must be readjusted to 0.25 so the software makes the correct recording.
The only other way to change resolution is to change the size of the tip bucket, and of course that is beyond our capability to do that with this OS hardware.