Well, the topic of the Kimber firing pin block has been on my mind, so today I decided to swing by my favorite little gun store (and Kimber dealer) and ask about it. What I found out was that Kimbers pin block is actually deactivated by depressing the palm safety, not the trigger. This means that the pin safety and trigger aren't directly associated, and the pin block doesn't effect trigger pull. But, what he did say was that the trigger system in the model II's did have to be modified to accomodate the pin block system and new palm safety design, with the result being that the newer triggers are harder to adjust than the old ones.

Just FYI.

Mike