I hope some of you who have experience dealing with co-ops and their management companies (especially in NYC area) can give me a hint how deal with the management company who for years deliberately makes my life difficult and put unnecessary burden on me and my investment.

Hint: for non owner occ, it's 15% down minimum SFR, 25% down minimum 2-4 unit.

I've solicited of bids from dozens of contractors, without even the slightest hint of being billed for an estimate. 

@James DeRoest The fact that you can still find deals on the MLS in the Pensacola area is a pretty big hint that there are still plenty of deals to go around.A significant portion of profit in real estate comes from the relationships you build in your markets.

Three ways to do this: ads, referral splits, or with a bigger commission split (hint: if you are paying more than 20% commission to your broker, they'd better be providing leads to pursue as well... it's 2020 afterall). 

You make sure the property is functioning as it should (first hint is the correct amount of income comes in each month, no mysterious charges, no tenants who secretly moved out, etc.) and if it's not, you make sure the manager is taking proper steps to deal with it.

I'm a little fearful for you when you have the hint of the word investment and then people jump all over you. 

Terrible tenant moved out, dumped a pile of garbage in the backyard, cut off their phone, didn't pay rent and didn't give a hint of where they were going.

Also, I've been searching for those free lists in the county websites (specially Los Angeles) and I had no luck whatsoever, do you mind giving us a hint?

@Latimer LuisAll thou we seem far from it today, he could be hinting at future interest rate risk your plan is exposed to, and therefore trying to limit your exposure by paying down current debt.