My neighbor would lay low for a time after being warned and would then slowly increase his noise again.

Considering that you had an intent to make it a rental, you will avoid the self-employment tax - which is what the warning that you kept hearing was about.

A person, Stern.

I'm trying to gauge 1. how worried should I be and 2. if I should warn them that it's important to schedule a payment before Saturday in order not to be late.Any advice, veteran cozy users?

Any Google search of Morris Invest in September of 2017 would have gotten top page results giving you fair warning.

I wanted to go knock again and sternly ask that they do what I asked.

Any tips,  warnings,  suggestions,  input about 203ks,  live in flips, foundation issues,  termites? 

I had been financing him for years. ( he is now one of the top Guru's in the country).but he had been turned on to the market and liked it.. and since I knew the borrower so well I did the deals for himnow he had a tough time on the rehab.. what happened to him is what I have been warning folks about on other threads this latest pod cast and book about remote rehab is so dangerous to the begineer.. this guy was anything but.. however my position was so low in the deals I made my money he lost 20 to 50k a house.. contractors ripping him off  thefts time it was a nightmare for him to try to do it from CA> but don't feel bad for him he makes 1 million a month or better right now being a Guru  LOL..

I thought I wanted to do live in fix and flips so I bought my first foreclosed house back in 2015 and have been living in it as soon as it was habitable and slowly finishing it off (emphasis on slowly, my Dad warned me I would never get it finished once I moved in!)

I've given them written warnings (probably why they didn't renew) but it's not worth my time and sanity to evict over this.