If you keep rolling a dice, you will prolly get a "1" 5 times straight at some point, its not something odd.
nitpick: a die, two dice.
It is quite odd when it happens synth after synth after synth on something that is lower than your rank. But then there is the question on SHOULD you be rolling dice for a synth in the first place? Why does everything have to have a chance to fail? I don't have a chance to fail when I cast Thunder. I cast it... the mob resists based on my level, it's elemental defense, etc but the action itself does not fail to go off or hurt me instead of the mob.
As it stands right now, not ONLY does any given action have a chance to succeed or fail, if it DOES succeed it gives a RANDOM amount of progress, a RANDOM amount of quality and a RANDOM loss of durability. Why should I have to roll the dice that many times? All crafting is right now is a fancy animation for your character flipping a coin and determining whether it succeeds or fails. It is not fun and it certainly doesn't make any real sense since your skill SHOULD have SOME factor in all of this.
I just did 2 leve quests on my 16 weaver. The first was a 20 leve quest asking me to make a optimal rank 23 item. I did not expect to be able to complete it, but I just wanted to grab the leves I could before the reset. I KNEW I would not succeed when it told me that my lvl 14 leatherworking was too low for the synth. Yet, I did it anyway. What happened? I failed the first one miserably and easily completed the remaining 4 synths. My other leve quest was a lvl 10 levequest. I have made hempen cloth for levels upon levels. I wasn't going to get the recommended clothshop support, but not wanting to take chances, I did. I botched 4/5 synths and failed the levequest. W-T-F?
Do you wake up one morning, walk down to the kitchen, take some bread, peanut butter and jelly and all of a sudden fail to make a peanut butter and jelly sandwich?