i got the new em-901 which has the electronic switch, and it did the 2 sec cutoff thing at first. my pilot(m401) would cut out like that when it was getting dry, so i got the 901 nice and wet, and that definitely helps. the wacky cutout seems to return as the cart/atomizer runs dry, then gets much better after i top off. i could see this being a problem for cart only users trying to squeeze the last drop out of carts. maybe this is why some have better luck than others, some keep thier carts constantly topped up?