I'd be interested too. I can detect play in my right front inner tie rod of my TR4A. Last year I researched a few options ranging from:
a) doing it all myself with parts (cup, ball, washers/shims) from TRF
b) sending it to TRF to be rebuilt
c) going to the mechanic (always last resort)
The rebuild option looked the most promising as it cost only ever so slightly more than the parts if doing it myself. However, I also read these things are screwed on so freakin' tight I may incur some damage when removing if I am not careful.
My car is fully assembled and on the road now so access to the inner tie rod is not great.
Bob