I agree with the above comments.

1) see a cheap flop...just call
2) if it is raised behind you call only if most people in front make the call

Most of the time sixes will not hold up unless you hit one of your 2 outs (a six)

I am not sure how it is on poker stars...but on party poker there is always someone going all in on the first hand on a MTT. I might consider folding the sixes on that first hand... depends on my position.

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