A small amount of movement in the rail of a screw-drive garage door opener can be normal, as it’s designed with some flexibility to handle the door's movement.

None of these are $200 per door in a C neighborhood.  

The basement bedroom is enclosed with its own interior door so there’s no privacy issue although I’m not interested in section 8 at this time. 

Put a pad with a digital lock on one door. 

I highly recommend against this tactic as you are going to swing a bat at a hornets nest or worse, knocking on their door.

Other small things I do besides leasing, mangement, some maintenance, are installing keypads to doors, programming gate remotes, garage remotes, doing walk throughs, doing walk through videos (15-20 mins move in/move out videos), advertising videos, take care of our website, our portal, fix the gates and cameras when they go out, just like everything you can think of.   

These typically cost money.Direct contact: In some cases, you may be able to contact the owner directly by knocking on the door and speaking with them.

If that doesn't work you'll want carpet or concrete apoxy (like a garage).

While I've been able to get out of my W2 after acquiring 30 properties, I've learned that you still need to generate some sort of active income unless most of your doors are completely debt free.

They advised making sure that the drain in front of the garage be kept clear which we did religiously.