Operating Agreement is probable, but do they need tax returns? 

The distributions are tax-advantage returns of capital, which makes those distributions even better. 

I'm renting a 3 bdrm-1 and 1/2 bath rowhome to a tenant family of four adults who are habitually late with their rent payment each month.

Yes, the closing attorney wired our funds, the buyers lender backed out, too late my money was gone and attorney claimed for a week her escrow account was frozen and lied about what really happened until I discovered it and confronted her.

Just overall returns? 

ARV: $430,000 PITI: $1950 Rent: $2700 Cashflow: $750Equity: $217,500 Cash on Cash return: 9.5% ROI: 150% year 1!

I'm receiving an ownership share and a return 

I would like to be able to put more money into the deals to increase my return.

Late to the game to reply.   

there are so many posts on BP by people who plan to take out a loan at 8-12% on a HELOC in order to get a return of 0-6% just to "buy more doors."