Sit-N-Gos More Difficult

Is it me or have Sit-N-Gos gotten really harder in the last few weeks? I am talking about $5.50 and $11 ones, not the real expensive ones. The mid to higher stakes have been hard for awhile now. Even my bread and butter ones, Double or Nothings have been tough for me lately. Maybe it's just a big down swing? I am losing more than my fair share of flips all in, around 80% losers lately. Maybe I am do for some run good time now, I hope. Less than 3 weeks left until Vegas, can't wait to go. I have been brushing up on tournament RAZZ stratergy for a awhile now. Really feel like this could be my year! Vegas baby here I come. Tony