Spent an hour researching parts needed. The diagrams on applicancepartspros.com helped a lot. I had a broken cam-hinge riser upp-L on the floor, that came from the bottom of the freezer door. Also noticed that the mating part was broken (assy hinge low-L). Read instructions from the user manual from refrigerator on removing the water supply lines and removing the freezer door.
To remove water supply lines, push tip of coupler in opposite direction from pulling out the line (took me 20 minutes just to figure that out). Removed hinge bolts on top of freezer door with 10mm socket and ratchet. Removed front leg cover, upper hinge cover, ground wire, and old cam-hinge riser, with Phillips screw driver.
On re-assembly, one screw was stripped on the upper hinge cover, and one of the bolts was stripped from the upper hinge (so be very careful when you remove and re-insert them). Shut off the power to refrigerator and turned off the water supply in the basement, before doing the work.