I believe you can get a statement of 'expected' earnings and a copy of your contract from Brookfield.
Not much use as it basically confirms that you are self employed and not guaranteed a penny during your employment. I'm not sure what the banks think of this, particularly as you say, most will already have their fair share of debt already.
Other than that, you are on your own to sort yourself out. But get used to it as thats how life with FR is.
EK