Worked on bleeding the brakes today. I had to order MIL-H-5606 brake fluid, as recommended by Matco and sourced a pressure container to pressure feed brake fluid into the system. I assembled the parts I thought I may need, i.e mirrors to check for leaks, spanners to stop the leaks and some rags to wipe up the leaks, thankfully no leaks. KSC gave me a hand to watch the brake lines as the fluid filled the lines up to the reservoir. I'm not sure if the brakes are properly bled, I have pushed the brake pedals, however I don't know what I should be feeling on a Sling aircraft.