Stripped shifter knob on 39

[Rustynutz52]

My shifter knob on my 39 is stripped. It appears to have a black insert that looks like a nut. Anybody have an idea on how to either repair it or replace the black insert. I have thought about jb weld to reform threads. Maybe a helicoil but into plastic?
Thanks Mike

[ford3]

heli coil will work good, the nut that screws onto the shift lever is in plastic,just make sure you have enough room to install the heli coil,use super glue or lock tight on the heli coil threads to stop it from unscrewing

[Rustynutz52]

Is it possible to change plastic nut to metal. I am guessing knob is cast to it.

[ford38v8]

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Rusty, I have in the past used JB to set a metal nut. If done correctly, the fix is stronger than new. Bottom drill for the nut to sit squarely, then determine the additional depth to drill for clearance of the shaft, as you don't want the shaft to bottom out on the plastic. Finally, undercut the plastic with a small bit to secure the JB itself.