Some of the later quill stems had a second bolt that would allow you to open the angle a bit, and towards the peak of the ergo bars there were a few hinged or opening quill stems as everything transitioned to ahead stems.
You can probably get some compact style ones through a quill but not an ultra compact. And careful when spreading the stem not to stress the metal to much but definitely the best way to do it !
Some of the later quill stems had a second bolt that would allow you to open the angle a bit, and towards the peak of the ergo bars there were a few hinged or opening quill stems as everything transitioned to ahead stems.
You can probably get some compact style ones through a quill but not an ultra compact. And careful when spreading the stem not to stress the metal to much but definitely the best way to do it !