@Andy W.
Great job, looks like a good situation to be in. Refi seems to be the easiest way with my lender. Also, the terms and rates seem to be better. Idk why this is, because they are essentially the same thing. Altho I agree not to dip into negative cashflow on one of these notes. IF you find a great deal that is going to cashflow significantly better than one of these properties. Consider "killing the cashflow" in one property or selling that property to reinvest it into another property that cashflows2-5x greater.
For Example I have a Tri-plex that Appraised at 110k but i only owe 60k on it. The bank will loan up to 80%. So I have approximately 28k in accessible equity. Now I also found a landlord trying to get out of the business. I will need around 30k to purchase her ten units, that will cashflow around 1500/month. Now If I can work something out with her. I will not hesitate to kill my 400/month cashflow on my triplex right now if I can leverage that money into 1500/month cashflow on her properties. It's all a balancing act.