Personlly, going with daddiOH and Mike Marlow on this one.

Important note to all finishers:

READ, UNDERSTAND, AND FOLLOW ALL INSTRUCTIONS ON THE CAN. While many think they know the manufacturer's product better than the manufacturer, this simply isn't true.

Poly will indeed desegregate with the heavier resins going to the bottom of the can and the ligher oils coming to the top. While it may not be apparent to the naked eye, especially when looking down into a can, it happens. Storage in hot weather can really make a difference in how fast this happens, too. (Hint: hotter weather makes the oil rise..)

No doubt, you have the long oils on top of your project. They may not dry for a long time, and if they do, your finish is already fouled. I can tell you as a professional that does this, you cannot "salvage" a finish. You either do it right or wrong, there is nothing in between. Don't spend the next couple of weeks trying to put a band aid on this project. If your poly isn't dry to the touch in a day, unless there are unusual weather conditions, something went wrong. Strip the old stuff off, buy new poly, STIR IT UP, and apply it. Put this behind you and go to the next project.

Robert