Hi Ian,
Thanks for posting this photo!
I still need to manufacture the steel T bar handles and now see for the first time they are not identical. The manual does not show or tell that.
The one on the right has a ring as a stopper for the T tube on the other one and you put a pin through the hole just visible behind the ring so it won't slide out.
The left one has no stop ring but only two pin holes that seem to correspond distance wise with the width of the holes for the T bar sliding through the wavy handles. There are two big holes just behind the trail lock on both trail legs for the tube to go through.
Thanks again!
Cheers,