Hi Rhonda, I've just left a shorter reply on the 'chat' bit of the site...
But, I find it best to do two coats as well, but I use one of those brushes made with goat hair I think, that has no metal in it's construction. I can't think of the name off hand, but this is recommended in a variety of places.
As PE has said the LE MAY have settled out, but I'd try two coatings first.
And do you warm up all of the bottle each time or just a small amount? Doing the whole amount each time is not so good for it.
In the darkroom, under a safe-light, I take about a teaspoon of LE and put it in a small jam jar and put the lid on it. I then put this in a larger vessel that I have put hot water in, which I have taken to the darkroom. This way you only melt just enough for a couple of sheets.
The emulsion is very soft, so prone to damage whatever the surface being coated. I add the smallest pinch of Potassium Alum to the melted LE, which is a hardener and cheap to buy when compared to buying a small amount sold specifically for this purpose. With the large canister I have of it, I am going to try using it as and Alum Toner, which I have found to be another use of it.
Good luck and keep us informed how it all goes.
Terry S