Need Some Help Spotting A Wannabee

[WateringHole]

I was browsing at some of the messages on THC Vietnam War message board and what caught my attention was a couple characters claiming to be former Green Barets. They are ClumsyCarp and sfrvn.
They told stories about being pegged for Baret training in basic by SF Recruiters and on and on and on. One told a story just him and his buddy was able to pass all the written test that was given to them out of 100 men. Even though I didn't go to Vietnam, I was in the Army in the 60s and don't recall Green Barets willing to sit down with any ground troop just to chew the fat because they didn't have anything else better to do. That wasn't part of their mole. They mostly kept to themselves.
Also, from what I recall, you had to serve three years active duty before you could even apply for Special Forces. Do anyone recall it being different ?