Old style 5kq 'round' TB seized

[Bares, Vittorio]

Hi - we had a throttle stick wide open on the rally car this weekend -
luckily it was the last thing that happened *after* we got her on the
trailer. 

 

Discovered that each end of the butterfly shaft has a needle bearing on
it. One of them seized right up and would not allow the shaft to turn
freely. I believe this may have been the issue in a previous TB I had as
well...

 

Now, my quandary is what to do next - I can go buy another TB, but that
one is also going to be 20yrs old - and potentially have the same issue.
Can these be rebuilt? If so, does anyone have any leads? If not, any
recommendations on what to do next?

 

Thanks,

Vittorio -