On a cold track, like it is every day in Calgary, you do have to burn the M/T tires hard. Something like 8-10 seconds in the box. If they are not good and smokey, they won't hook on a cold track.
I found this was the case even with L4 compound ET Drags. I kept fooling myself thinking that the stickier compound would not require as hard of a burn out, but when I stepped the burnout up to 8-10 seconds in 2nd gear, I went from crappy 1.75 or so 60's to 1.56 60's.
Good luck with your choice.
-Matthew