Since tucking in nicely is a problem, I'm avoiding it. But I am glad to hear of Microshift; I had not previously been aware of this brand and they had more choices.

I just chose some of their flat bar thumbies. They were not cheap but right now this shifter thing is holding up my whole project, and they look like the most workable solution. And if they don't work I can send them back. I already have plenty of other things to send back so I'll be going to the post office anyways.