Does the drivetrain feel noticeably smoother on the larger (16t) sprocket? I've been fiddling with the brompton drivetrain for ages, trying to fix some quirks and I'm wondering if sprocket size and tooth profile will make a clear difference to a drivetrain that's under a lot of tension. The tooth profile for the 16t sprocket has been shaved down to facilitate shifting... but it may also make engagement and disengagement with the chain noticeably smoother. Any observations?