If by micro stakes, you are talking about .01/.02, or 2NL (max buy in) with a .70 min buy in, well, all I can ask is why would you play SS?
People tend to play these limits a good deal harder than they might at a higher limit. A 3xBB bet (6 cents) means little, so most don't bet that little.
A SS would give you too little maneuvering room. So you'd pretty much have to play super-tight. You don't have enough chips to speculate with lesser hands, to bet your draws, or make hardly any of the post-flop moves that are interesting. But, as I understand it, SS strategy is about lying in wait and playing hard preflop with a monster. And then running off with your winnings. Or slinking off, I suppose. It's not a grinding strategy. It's hit-and-run. Running with $1.40 is ...sad.
If you are waiting and waiting for AA or KK, you are wasting opportunities. And when one factors in the number of times those two hand are busted...
I'm not shocked that SSing on micros is a losing proposition.