Took my new Mark IV Competition to the range today for the first time. Tried 6 different ammo brands/types from both magazines and had zero failures over about 150 rounds. Really like the gun, shoots much better than me. I'd like to improve the trigger pull but don't really want to install the full accurizer kit. Thinking of the TandemKross trigger and the VQ sear or maybe just the sear. I'd have to go with the Mark II or III sear since you can't buy a IV sear alone. Anyone try this? Will the Mark II or III VQ sear work on the Mark IV?