that's unfortunate :(
i guess my only other suggestion would be to try fighting on TA for a while. asuming the chances of getting a whatsitsname, given that you've just beat a lvl 42 monster on TA are 1 in 8 (which is what many of us have guessed are the chances, since there are 8 larki lvl 42 monsters), it would probably be "quicker" on TA. because your probability of getting a lvl 42 on TA (whether on shy, harmless, or whatever like most people fight there) is much greater than if fighting on god-mode on larki (which i asume you do as most high lvl fighters do). part of it being that you have a lower rank, and part of it because there are no lvl 1-29 monsters on TA you can accidentally run into like you could on larki. but i also realize you need ingredients from upgrading, so fighting on TA may not be a valid option either.
--jason