Nicely done! I swear left hand thread never even crossed my mind, but it makes sense. The heating/freezing method is a very common theme you'll learn working with bearings. Shrink one, expand the other. I had a friend who used to love to tell me stories of when he was in the military stationed in Alaska. He said when they worked on parts that needed to be shrunk they'd throw them in the snow and heat the other part inside. He said that often the bearings would drop into place without pressing needed, and then as the parts normalized they'd lock together.
Anyways, glad you got it!
