I currently have, on my Vitus 979, some TopLine cranks and a Campy Nuovo Record BB. The TopLine cranks are purported to be JIS and I'm pretty sure the NR only came in ISO. I had a NR crank on it before, and it was pretty normal. I was a little worried, but everything is working fine. The TopLine sits about the same place on the taper as the NR. For what that's worth.
I did the beer can shim on my old Courtois I rode when I lived in Poitiers. Probably Carlsberg or 1664, I don't remember. The crank taper was deformed and bottoming out, so I needed some extra space. It was not great at first - I was always tightening it - but after a time it settled down. The beer can must be cut just to sit on the taper faces and not fill up the corners, otherwise the thing will be coming loose all the time.
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Owner & co-founder, Cycles René Hubris. Unfortunately attaching questionable braze-ons to perfectly good frames since about 2015. With style.
Last edited by scarlson; 03-24-20 at 11:19 AM.