Is the 3 and 3+ trigger assemblies cross compatible.(the same)? Looking at the Mcarbo Trigger Spring Kit but on their site it just states Evo 3 so I contacted them and the guy I talked to was unaware there was a 3+ so he didn't know if their kit would work. He told me to ask CZ if both trigger groups were the same. I called CZ and there was an expected wait time for customer service of appropriately 60 minutes so I hung up.