Does it feel like the typebars are catching in the guide, or something binding deeper in the machine? If it's the guide (this is going to sound crazy), grasp the top of the typebar and sort of wiggle it side to side in the segment. Not overly forceful as you don't want to bend the segment slots, but just enough to allow the spring steel to realign. Test, and adjust if needed. It sounds kind of unhinged, but this is the fix for most American made machines that have bars getting stuck in the guide. I've done this with Royals, Coronas, and Underwoods in front of clients before and they look at me like I'm an idiot wizard. Ha If the top of the bar is seriously bent this won't work and you'll need a repair person to use some side alignment pliers, but if the bar is just tweaked it usually works very well with a bit of practice. My unsubstantiated belief of why this occurs is US companies using the same grade(if not the same company) of steel in their bars that tend to be a little softer than their European competitors. *You DON'T want to try this with an Olympia or other German made machines. 😅 If it's coming from deeper in the machine, check the linkages to make sure they're not tweaked and binding against each other. Hope this helps!
advice via Nashville Typewriter, a repair person. <br /> https://reddit.com/r/typewriters/comments/1o4qxvn/chasing_problems_stuck_keys/