At 61.42, there's plenty of room left ;)
Any 31 and less will bring you closer, and most probably the 32s also. 33 - dunno, it depends...
Problem is, it depends on replacing higher scores, and the margin melts down.
If a 33 replaces a 34, a 68 is kicked out by a 66 in the average pot. Two strokes difference work within 500 scores, thus the difference in average is 2/500 = 0.004, often invisible under the cover of rounding in the second decimal. You don't see the average becoming better but it happens!