coolent leak, need help

[RoTTirocket]

Another coolant leak! Does anyone know where I can either rent/borrow a coolant system pressure tester?

[RoTTirocket]

Recently changed the coolant flange, new upper radiator hose (prior leak). I believe this leak is coming from the two hoses which lead to the heater core, but for the life of me I cannot get the bottom part of the heater hose out (top disconnected with ease), I don't want to force it to the point of something breaking, any pointers? (I wanted to get the hoses out so I could inspect them before buying new hoses, or use a pressure test to rule out where the leak is coming from)