Just a general point about the Capital Works Fund/Sinking Fund. An important purpose of these is to avoid intergenerational inequity. Money should go in at a steady rate but come out lumpily, when expensive maintenance needs doing. Otherwise, just the people who happen to be owners in the year when expensive work is done pay. People who were owners before get to use the common property as it runs down without paying and people who come later get to use it in good condition after it is fixed up, also without paying.
So, if there is enough money in the fund, there should be no need of a special (high) levy. Rather, the work can be done now, the fund takes a hit when the work is needed but then gets built up again gradually with moderate levies over some number of years in time to cover the next anticipated major expense, preferably with some comfortable margin for the unexpected.