Silly Choke

The two Meriden Triumphs I had (1960 5TA and 1969 Bonneville) both had ticklers on the carbs (Monobloc and Concentric) as did my Norton 88, (though the less said about that particular pile of the better), which was enough to start them. As I remember, no choke was fitted to any of them.
It may be worth a quick phone call to one of the Meriden Triumph parts suppliers or perhaps to Amal themselves (or Burlen who, I believe, make Amal carbs these days - bit hard to tell sometimes!) for advice.

The above is a long winded way of saying that I really haven't a clue!!