Utah S2K

I Just recieved and installed my Axial short shifter from Rick's. Install went well however I am unable to install my Ti VooDoo knob which I have had on the O.E.M. shaft for years. The knob spins down freely on the O.E.M. unit. It feels as if the 1-2 threads on the Axial were distorted during thier final deburr (as the major diameter is clearly larger on the 1-2 threads). I'd rather just run a die over it then return it to Ricks but don't know the specification for the die.

Thanks,

Utah