Synthing with %?

[RussInDaHill]

how do you synth weps with high %? Is it just a luck thing? I normally synth weps with like 14-18 %...but I did manage a 34% once...just wondering if there was a way to increase the chances of a higher % on a synth

[ChocoboChad]

Yeah, it's random.
You might wanna try on a lucky day, though.