The measurements are fine, there are differences of ~ 0,1/0.2mm that is no problem, trust me. Try them in any other euro gun and they will work. If the difference was 2mm then you might see a problem. The Euro trigger is designed to take up these differences.
Go check out your trigger, very carefully, look for hair line cracks or damaged bits inside
Go check out your trigger, very carefully, look for hair line cracks or damaged bits inside