Olympia typewriter

Sells olympia typewriter, bought a few years ago, never used except for trying. Purchased revised and relacquered in this beautiful turquoise green color, but will need to be revised again. Indeed, some keys block in the high position. Note: was in a room during painting work. Despite plastic thrown on this occasion, bears some traces of white paint (visible in the photos.) is it the paint that has crept in and blocks the keys. I don't know. Note: it is heavy.