You could try shimming it.
An inverse shim could take it down to 1 button or if lucky no buttons at all as per the OP.
Personally I'd try a needle and thread.
@goodhead 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.
You could try shimming it.
An inverse shim could take it down to 1 button or if lucky no buttons at all as per the OP.
Personally I'd try a needle and thread.