Yesterday, after church, I fired up the heaters in the garage and proceeded to go through the boxes of new parts and tools taking pictures and putting stuff away. With the floor next to the car now cleared, I dove into solving the tranny shifting problem. It took me a while to get the valve body off since I was being quite careful, but once off and disassembled I found that a critical e-clip had fallen off and disappeared. This is a known cause of Corvair Powerglides failure to upshift, so I wasn’t surprised to find it missing. After cleaning gasket material off parts, I called it a night.