Just for Kicks, I just built and posted an Elfin Kitchen for you. It's completely stock based off of '
RUU_Elfin_hTC_Asia_WWE_3.07.707.02_4.1.13.71_03.34.90_BLUE_Ship', but I added the SYS's 23504 and 23569. It does not have all the other parts of this M2D Blue Kitchen, but you can grab both and borrow the parts.
The Stock Kitchen should cook you a ROM without any changes, or you can add/subtract the parts you want. It includes Radio 4.1.13.71
I hope that is the most current Stock ROM that I used for the base. If not, let me know.
Find it HERE and download on Post #2.
Make sure and backup all of your Data and be ready to flash back to stock just in case of errors. I don't have an Elfin to test the ROM's. Please use at your own risk.