I just recently learned of this trigger post when it broke off and I had a world of trigger problems and jam. Basically did what your saying, pull the trigger, but no power.. ALSO check the contacts that engage with the selector plate make sure they are bent up and making a good connection, I had to bend mine up after till i got solid power flow.
BTW Im not sure if you know which post we are referring too, but its not the one that the trigger sits on, its a longer one right behind it that blocks the conductor from going back to far and hitting the gear. They are susceptible to breaking in reinforced boxes I was told after I finally figure out what happened with mine..
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W1-5
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