If you want - bring in all the stuff you can find online about the tick- or I will call them
I am sure you want to get this resolved under warrenty - TRUST ME! for example the heads for the 2.5 SVT right now are about $2100 for the both- JUST THE HEADS!
so If I where you I would take it in to them and if you want ill call em if they ***** about the noise- and how they dont know what it is- if they still dont do crap - then you can sue them- but I know you dont want that hassle- so take i in to them - if they tell you to stick it in your bung hole then ill call em and chew them a hole and then they should look at it for you!
PS I can get a bit of attn when I want to by placeing a few choice names in the conversation and of my "vast" technical knowledge - I can make most service writers ask me to hold on a sec so that they can understand what it is that im talking about-
not to mention those few choice individuals whom I know that carry a bit of weight in things Ford (and Mechanical for that matter- and saying I work for Kirkhams helps a lot too).