With management or attempting OOS self-managing? 

Your landlord is both not too swift, and is also self-managing a $3000+/month rental.

The local branch manager got involved, couldn't understand what I was explaining either, didn't want to admit it, and got defensive and shut down when I tried having my attorney explain it to her in a different way.

I am going to continue educating my self while I get enough for the DP and other expenses.

Brian Davis: @Eric LoweThere's a company called Rental Property Refund that does cost segregation studies virtually, based on self-reported data from you.

Now I own and self manage 29 SFR and find it to be easy.

If you just handled it on your own/contractor self-mitigation, you would need to have some proof it was handled.

However if you plan on buying 3-4units, there is a trigger rule for FHA, it is called the self sufficiency test.

This allows you to control renovations and decide whether to self-manage on the back end.

I hope you are asking two separate unrelated questions, because there's no point in doing cost segregation for properties held inside your self-directed solo 401k, save for some very rare exceptions.Some of the Bigger Pockets experts who operate reputable costs segregation companies are @Bernard Reisz, @Yonah Weiss and @Julio GonzalezSome of the Bigger Pockets experts who offer Solo 401k administrator services are @Dmitriy Fomichenko, again @Bernard Reisz and @Brian EastmanReach out to them and see if they can help.