SRAM Guide Sticky Brake Lever Rebuild

If you've got a SRAM Guide R, RS, RSC or Ultimate (or probably any other SRAM brakes) and the lever is slow and sticky, you're probably suffering from a swollen master cylinder piston. This is how you replace it with a new one (which was supposedly redesigned and won't suffer from the swelling problem anymore). Also I went back and checked and found the second bleeder port screw, it was hiding under a little ziplock bag. Just in case you guys were worried.