Check out this pic...
http://www.thedougout.com/fitting.jpg

This is what my '70 Century Resorter has to connect the Teleflex throttle
cable to the carb. What's missing in the pic is the spring that sits
between the floating nut (with cotter pin) and the nut between the fitting
and cable.

My single-arm morse control engages both the transmission and throttle on
the carb. When the morse control is moved into either forward or reverse,
it starts to retract the throttle cable prior to the transmission actually
engaging. To prevent the transmission from engaging above idle, this
fitting allows some tension to be taken up (1/2" or so) prior to actually
engaging the carb arm.

The (current) Teleflex fittings I've found don't do this... they have a
simple ball joint that immediately starts to move the carb's throttle arm as
soon as the throttle cable starts to move.

Does the style fitting I have exist anymore? Unfortunately I botched this
one up last year when trying to adapt it to a new carb. I either need to
find a new fitting altogether, or at least the sliding part with the nub and
cotter pin hole.

Any help would be EXTREMELY GRATEFUL!!!

THANKS!!!
Doug