See if Liberty works on the Nash. They are well known for manual trans improvements.
Yeah mine shifts lightning fast now
Gus
If they are face plated like that...IIRC...they won't stay in gear on decel. That's why I just slick shift them and the syncros and put them back together. They shift flawlessly and I don't have to hold it in gear.
I drove mine on the street like that for about 5 years and it doesn't come out of gear. I got pretty good at down shifting it even with a Long V-gate. I have an H-pattern Hurst Comp Plus that I never got the chance to try as I installed a street HEMI box last time it was out. The Faceplate puts any slick or Pro-shift 833 I have ever driven to shame. The dogs are finished on a slight angle to keep them engaged.
Gus
64 Plymouth Savoy 493 Indy EZ's by Nick at Compu-Flow 5-Speed Richmond faceplate Liberty box Dana 60
