Arm yourself with data.

So, stop pretending that you know details about this situation, that the OP never explicitly explained. 

If you see him, please approach him with extreme caution and assume he is armed and very dangerous.

Things to also consider are comparing a 30 year fixed versus a 7/1 arm, etc. that’s really where you’ll see the impact of rates. 

As in he carries a side arm at all times to collect rent in person.

My current lender made some errors in calculating rate adjustments on an ARM for my investment property and not including information in the system when interest payment deferrals occurred in '07 and '08.

Should I consider an ARM?

They do 'handwritten' letters and postcards done by pen-wielding robot arms (seriously). 

The challenge of course is that the real estate industry is heavily regulated state by state with a powerful lobbying arm.

It doesn’t seem like this is explicitly disallowed and would be a much more convienent way to do it.Also, @David Moore, why the property tax statements?