For over 20 years I have lived in a large SP that has a consistent default rate of 25-30% of owners and this has resulted in a situation where as of today the arrears, $134000+, constitute 55% of the SPs assets.
The owners seem happy with it.
We haven’t had cash flows issues because the OC horribly over levy the lots leading to very large surpluses accruing in the admin fund. The owners seem happy with that as well.
I was once given a figure of 1.5% default rate as the average rate across NSW.
Sounds like half your owners are in arrears.
Might be time to consider the very slow and expensive legal channels to pursue arrears before you start paying extra in levies to carry the defaulters and head-off the cash shortfalls that arrears can generate.