I have had tenants for years that are on M2M (in Florida, it is not very uncommon).

The fact that your property was updated in some areas and then left with the old knob and tube in others is not uncommon when home owners and electricians wanted to save a few bucks and do the bare minimum.We have done almost exclusively older homes that had knob and tube wiring and found that even those with breakers and visible Romex were patched in to old wiring somewhere. 

It's not uncommon for it to be up to a week to allow the previous owner to move after the transaction has closed. 

In the start it was not uncommon for people to mine 10k coins a week.

These are not uncommon. 

I agree that those expenses seem very low; not uncommon for new landlords to underestimate expenses.

It's not that uncommon.

We offer FDIC insurance on all uninvested cash and it's not uncommon for others to offer it as well.

When the applicant has an S8 voucher, that effectively takes the place of the income requirement for me, as it is not uncommon for the Housing Authority (at least in my area) to adjust what they pay versus the tenant share throughout the tenancy as the family income picture changes for better or worse.

Also in this time period there was a murder on the block before mine which is very uncommon as this street doesn't see much crime...I just hope the buyers don't back out.Because I'm sure some will ask...I am not able to put the insurance money in an escrow account for them to have the repairs done.