My guess would be that as this GP is doing 1031 as a TIC into the deal he would be a little less likely to want a sale, which is a taxable capital event, and would like to keep his money invested and sheltered from taxation as long as possible which tends to fit with my investing style of long term/preferably forever investing.        

Unless Uncle Sam has collected his and the income has been federally declared, it does not exist in the STR world which is why you are having an issue using it now.

Then when you sell you will get to prorate the gain between tax free (the period you lived in it) and taxable (the period it was a rental)4.

I receive a K-1 for all 3 for my federal taxes.

Ask them what their Federal Lending Limit is and see if that fits your scaling plans.I would talk with the larger loan outfit. 

(g) Any federal Internal Revenue Service liens that, pursuant to provisions of federal law, are not discharged by the sale, even though the tax collector has provided proper notice to the Internal Revenue Service before that date.

I was pretty sure all US mortgages were due on the 1st but not late until the 15th by federal law?

@Chris JohnYou’re turning $100’s of thousands in tax free gains into taxable gains. 

It's the idea of Buy - Rehab - Rent - *Refinance* - Repeat.Selling your property would be a taxable event, too. 

Mortgage Program will Exacerbate InflationU.S. federal government spending "is the biggest threat to disinflation and lower interest rates" (Piper Sandler).