Joined: Nov 2017
Posts: 93
Likes: 39
From: A Dutchman in Budapest, Hungary.
Bikes: Koga Miyata GranTourer 1985, Koga Miyata Adventure 1992, Cinelli Sentiero, Giant Terrago 1993, Presto Amsterdam 1975(?), Dahon Classic III Stainless
Probably obvious, but rub that cotton ball along the rimtape and the sides of the rim too. Soap in the water can make it easier to spot the bubbles, and don't forget to check the valve as well.