It was a huge investment, but it cut the electricity cost by the full 2K per/mo all summer.

A HELOC comes with a variable interest rate and all signs are pointing to no further Fed rate cuts in 2025 - and there may even be rate increases.- So, you may want to consider locking in an interest rate via a 2nd mortgage.Do you have reserves for unexpected expenses?

Then we keep the accounting straight via Quickbooks with each unit a different Class.

There were several mistakes made on my tax returns that I pointed out, which required going back and forth with their tax preparers, and asking repeatedly to cut to the chase and have a phone call.

Matt is on the cutting edge in this arena.

You might make less, but you cut a lot of costs, make the 1031 exchange easy and maybe worthwhile. 

I am left feeling that working with them was a wasted investment and decided to cut my losses and move on. 

If the partner wants to get a bigger cut on future deals, they can save their money and buy into a larger percentage on the next deal.

Not possible, 85% max LTV on a purchase or straight refi, 75% max LTV on a cash out refi.

What would a fair cut of the profits be?