Great tenant but property tax increases have reduced my cash flow.

As a result, you might end up increasing your taxes by delaying income and accelerating deductions.Did I miss something?

Investors focus on adding Accessory Dwelling Units (ADUs) to increase income streams.

Alternatively, can you use either unit as an STR to increase cash flow even further?

increase equity How did you find this deal and how did you negotiate it?

Are mobile homes more prone to these issues than a typical SFH and I sure increase those allotments? 

These will definitely be helpful to consider especially the insurance in my area of SoCal where companies are leaving and prices are increasing. 

Still renting and value keep increasing Lessons learned?

BUT....With the rates dropping ( and they will)  Buyer interest will increase and the markets will immediately start to level first , then increase( prices) as both buyers and sellers see the market stability and value.

I'd start by looking at where the money is going and how to increase your income and lower your spending.