Re: trouble installing afpr help!
No, I have the exact one and it requires the stock allens.
To make sure it is fully seated, lube the o ring with something life Klonz or something like that. You slide the allens in from the side, not neccessarly "head on."
It can actually be a PITA with the EGR and upper intake on...remove those, and the job is 100% easier...you'll be sure to not have any leaks then as well.
Keep trying, you'll get it. It can be a pain, i know what you are talking about, but no other allens needed.