Crafting Mastery AA and % failures on trivial combines

[Khabok]

Does anyone know for a fact if the mastery skills reduce the chance for failure to below the 5% mark that has always existed for even trivial combines ?

As a Shaman who makes a living selling potions, I have kept track of success rate making Gate potions and Kilvas skin of flames. At 210 skill with GM bag equipped, they seem to both have the same 5% fail rate even though the trivial on Kilva (136) is 40 pionts less then Gate (176) I still seem to average about a 5% fail rate.

Now as there was always debate from shaman that had trained it if the Alchemy mastery AA actually worked, many say they saw more failures after training it, I had never bothered getting it. But now with the new Omens combines I have trained it for the higher skill combines.

Of course if they made the Alchemy/ Poison making combines have the same trivial I probably just wasted 18 AA since I cant see trying the combines at 200 skill when a rogue can do them with 250 skill and have that much better chance of success but for now we have to wait and see.

[Nolrog]

My understanding is that they do reduce the failure rate below the 5% floor. So with mastery 3, which is a 50% reduction in your failures, you should fail only 2.5% of the time.

[Tudani]

The 5% failure rate itself isn't hard coded anymore. The failure rate now scales down until an item with a trivial of 200 or more points below your skill level is no fail.