stem could work, but i like having it within thumb reach as i'm not massively confident about groping around the bike while riding. i'll give it a go. (old bell was bog standard and fit fine, not sure why this one won't.)
today i had to shout MOOOOOOOOOVE at a student who was walking in the cycle lane--i had vehicles to my left so couldn't just swing around. turns out, he was from a group i'm working with this week, but luckily i was in disguise...