Having an issue on my 1972 T.

When downshifting out of 5th, the reverse lockout is making a loud clicking noise. As in very loud. It's as if there is so much tension on the lockout that it's snapping back against the shifter base when released. I bought a new (used) shifter thinking that would solve the problem but no go. I drove this car over 2,000km all over Italy last year and had no issues. Then suddenly this.

And, yes, I'm aware that I can upgrade to the 73+ shifter but would really like to keep the look of the earlier shifter if I can.

Anyone ever have this problem?