So you need to do the following to get to truss unless I'm mistaken:

1. Land a blackjack
2. Bind legs
3. Bind hands
4. Tie
5. Truss

Now each of these seem to have about a 2/3s chance of landing, even at 100%. So you have 2/3 x 2/3 x 2/3 x 2/3 x 2/3 chance of landing a truss. And if you fail any of the bindings, you can't attempt to rebind. This seems a bit off to me, as no other class has that little chance of getting to its 'good' skill. Can a player either fill me in if I'm missing something or an imm take a look at this? Maybe allowing thieves to rebind if they miss a binding would solve the problem, or at least make them unbind the 'broken bindings in the way' and then try again.