Yvette May I'm with Sue Kelly If you can prove she got the notice that you are now self managing and the check is made out to your old PM, I would post the cure or quit notice.

To charge higher rent with sole reason to compensate for losses by rental property improvement does not cure downward trend line nor in a flat line. 

Forget the rent post a cure or quit on the water bill.

Bureaucrats think that if they write things on paper and give it their blessing then it will magically fix real-world problems, but vaguely enforceable laws like this won't cure bad landlords. 

2) Were your tenants ever issued any 3 day notices to pay or quit or cure or quit and what were the reasons?

It is no different than any other tenant complaint , it is justified and according to the lease a landlords responsibility to cure.

For example, in Cali, to collect a late fee, you must provide a separate  three day cure or quit notice and cannot tack a late fee onto the pay or quit notice for late rent.If the tenant is on a month to month and paying late seems to be a pattern, consider giving tenant notice to not renew the tenancy and start with someone fresh.

Joe's lease has provisions against this, so I properly serve him a "10 day notice to cure" using a process server ($$).

I would have already given them a quit or cure.

Upfront communication and honesty is the best cure.