It took me over three years and I don't even want to know how much money, but I have finally completed my US Tech Spec collection, including all gift set gestalts and targetmaster/legends variants.
And as odd is it is, my final two came in on the same week after almost three months of finding nothing, funny how that works isn't it?
Honestly I never thought I would see Defensor, since the giftset itself is so rare, how can there be more than one or two people who actually cut up the box and kept the specs? But, fortune smiled upon me once again, and with the help of a friend I was able to acquire the entire set of six specs from the back of the box (which are slightly different from the individual versions):
Oddly though, Action Master Megatron was just as difficult to find, and in the end I had to end up purchasing an empty box and remove the tech specs. Fortunately I already have another one still sealed, otherwise I don't know if I would have had the willpower to remove the specs from the back.
So as of today I can finally close the book on this chapter of my collecting, my tech spec books now lie complete and I only need four more instruction booklets in order to complete those as well. To any tech spec collectors out there, good luck on the journey, it was a great ride.