I'm in the process of upgrading a 1984 Miyata 610 and I'm changing from downtube shifters to Shimano bar end shifters. The bike does not have braze on shifter mounts, so the shifters were attached with clamp on mounts. The new shifters don't need the downtube mounts, but the barrel adjusters they came with do. The original mounts have plates designed to stop the shifters at the top and bottom of their range that are ugly, bulky and look like they'll interfere with the adjusters. Can anyone direct me to some simple shifter mounts that only have a clamp and the mount?