Recently I have noticed a pattern that I am getting knocked out of MTT's by trying to re-steal all in vs late opens in the sb /bb  from btn with weakish hands. 

If I am down to 16-20bb and have a hand that is not necessarily ahead of the late persons open, Is it wrong to shove with a hand like K6s / T8s If I think I have enough fold equity from having a tight image and the late openener having a 40% open? If called im obviously behind but have equity with mid suited cards.   

If I run the hand through Iceimizer it shows me the hands I should be re shoving with, but it doenst take into account fold equity? Its all good and well waiting for hands that are ahead of the range but surly I should be taking other spots to try and keep a playable stack? 

Any advice on re-steals would be great and much appreciated.