have you checked for good chainline.
In my humble opinion, your chainline would have to be quite 'off-centre' to make any noticeable difference ie noise etc as described. most likely over tight chain.
@sniffy started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
In my humble opinion, your chainline would have to be quite 'off-centre' to make any noticeable difference ie noise etc as described. most likely over tight chain.