I was also looking at this as well. I was exploring and going based on the mobs i found dropped it on YG. Rak_boy is correct. The lowest lv mobs that are actually in a group where you can farm them effeciently is like 32 i think. I tried taking them on my CNJ28 and i was able to kill them one at a time, but it was slow and tasking. Kinda a pain when flax is so easily obtained, and its a higher lv synth. I'm guessing ill either be spamming a lower lv synth forever. Or I'll go out on my 34BTN and make some cash selling the stuff on that job, then just buy up all the webs i can find....