To push or not to push?

[TallBrad]

Live 7player tourney, four players remaining (pay to 3).
Blinds: 1000/2000 (go up to 1500/3000 next hand)
Stacks:
D - 26,000
SB(Hero) - 17,000
BB - 35,000
UTG - 27,000

UTG and dealer fold.
I have Qs6s. I push.

Was this correct? My M is 5.6, but my effective M is just a shade over 2. Which calls for a push.

Am I interpreting Harrington's use of M, effective M and dead zone properly?

A couple of guys later said, that since Q6 is below average and we were on the bubble I could have played out two more hands and had a better chance.

[xDiamond_CutteRx]

Unless your opponent is going to call with a wide range of hands, this is an easy push. Even with his chips, calling and losing is going to HURT.