There no water that leaks inside.

It also saved me when the fridge water line leaked because you pick it up, rinse it and put it back down.

Because what I mean by those "unexpected repairs" is that I simply set aside a set amount of the gross rental income each month as sort of a safety net aka just incase money for things such as a leaking pipe that I didn't know was going to happen before it happened thus it was "unexpected"So... technically I can't take out that 1% because that's just my own safety net savings I set aside but from that savings if something does happen that year and I have to make a repair that does end up as an "operating expense" since I have now spent that money and not just set it aside like with the unexpected repairs moneyHope this isn't too confusing to understand but now that I am reading over this I think I have answered my own question :D

Now I notice it had some leaking in the 1st floor bathroom coming from the 2nd floor, which seller made it seem like it was small leak coming from alleged old bath tub.

I want to place wifi water sensors in all the major potential leak areas around the house.

Try to connect with @Ryan Leake!

I agree with the items @David Liu mentioned but add insurance, vacancy, property management (even if self managing because it is work), misc (mostly items divided across all units (bookkeeper, LLC, umbrella coverage, tax man, office expenses, etc) as well as one off items such as utilities due to slab leak.  

Repair expenses such a dishwasher and plumbing leaks.6.

I checked the lease and there is no stipulation saying that gas must be maintained in the unit and fortunately the tenant alerted me when water started to leak.

Has the roof had any leaks?