Originally Posted by
LarDasse74
I have the same adapter and I just use the adapter + ahead-style-stem as a quill stem.
Edit:
I actually have
this adapter, not the Profile one. My mistake. I believe the minimum insertion mark is usually 2X or 2-1/2X the quill diameter.
Here is what
Sheldon Brown had to say about quill stems:
Beautiful! Thank you Lardasse. Life passing before my eyes was exactly the concern. Peace and safe riding!