What does your BRRRR model actually include for the refi phase?

Hoping to get discussion on under-modeled refi variables: lender-qualified rent (75% of market), seasoning requirements (3-6 months carry cost), DSCR at stabilization, and reserves at refi closing.

Most analyzers do a solid job on acquisition side. The gaps show up at refinance.

How are you modeling these? Spreadsheet, tool, back of napkin?