the check is $1151, and it comes in on the last day of the month, every single month.

you're asking for $750 in rent, on the first day of the month.

750 < 1151.

what's the problem, here?

it's not complicated.

unless the banking system collapses, or the computer networks implode, there's not much chance that that cash isn't going to get you, the next day...