Used to be...
...sadly the only way to get those items is on EM or try your luck which I personaly don't recommend. Try EM or ask other players if they are selling said items.
LacieLane 135 Wizard
Priestess 128 Priest
Quit!!!
No event, feel free toforgefail any time you want
They're not doing forging event anymore and yes it's hard to + chimera accessories. You're not the only one failing on some stuff, others as well but sometimes if luck is by your side you'll be able to + an item without fail.