When I shimmed my Mark II, I had read every post on the thread, close to 300 of them, and I knew what to watch out for. I tried three different sets of shims before I had what I wanted, a better trigger and a 100% safe rifle. For the investment of a little of my time, I got an improved trigger pull, removed the backlash, and gave up nothing. If money were no object I'd probably just get a Rifle Basix Trigger, but this way I have a good safe gun, and enough money for a nice laminated stock!
Papajohn