I have avoided some of the "D" class neighborhoods as I suspect that issues such as yours are more prevalent but I still struggle to think that a 7 month vacancy is normal and can't be corrected by better advertising or adjusting rent price.

I have read up on the concept/method of also using "Adjusted Valuations" when converting Traditionals to ROTHs, and am very intrigued.

It will have an adjustable rate.

Is the value cap reviewed and adjusted year by year or do they advise you now on what your cap is over the next 20 years?

You may just need to adjust a whole lot more than usual.

Overhead door company can adjust and lube springs and probably install weather stripping on bottom of doors thought thats a pretty easy DIY (or handyman job too). 

I have read up on the concept/method of also using "Adjusted Valuations" when converting Traditionals to ROTHs,  and am very intrigued.

I'll adjust my numbers.

Then, make adjustments.

The most common portfolio style loan in Texas is a 20 year adjustable rate loan.