I also got mine from Audumbla, and didn't seem to have much of a problem. Stupid question, and no offense is intended, but are you triggering yellow weakness? That drop rate seems abysmally low if you are, and I feel for you. I seem to remember getting 8 seals (along with 8 THF seals for a LS mate) in about 8-10 kills. Either way, good luck!
The tales of men are told with lies and regrets.