3000m track rod ends

[loudandfast]

Can anyone help me, I am trying to find track rod ends for my 3000m I am rebuilding. I have tried triumph 2000/stag which are to big, spit fire which are to small and I now have a firstline ftr4063/ Unipart GSJ156 which has the correct taper but is about 1mm to small to thread onto the rack. has anybody any alternative ideas please
andy