Hey Davide, good to hear from you! I had an Ivrea-built Lettera 32 which had the same problem with a few typeslugs. Che peccato. Still, it would almost be worth getting another one and transplanting some typeslugs, perhaps?
Tank you teeritz for your comment, it would be great to replace the slugs, but that involves a very precise soldering job, which i won't be able to do. I could replace the typebar altogether, but i think it would result in bad alignment... I thought of swapping the whole basket, since that seems to be the easiest solution. Should i ever find a broken Olivetti portable with a good basket, I'll try that!