I have a Colt Series 80 Officer's ACP. My question is this.... If I remove the series 80 parts (firing pin safety plunger and spring, as well as the levers), and don't install the shim that Brownell's sells to fill the gap from the levers.... Will the pistol be safe to fire, and will the pistol work reliably? I've read various forums where people have removed the parts, and added the shim, but I'm wondering if the shim is really necessary. Anybody here done this?