Waste....this a great post, I must have missed it the first time you posted it! Just to add, I use a butter knife--it's duller than the screwdriver and thinner than the tongue depressor, and works very well. I had about a 1 1/2 foot section out when I came back from vacation this past weekend, with about a 3 inch sag at the lowest point. It took DH and I about 20 minutes to put it back in, but it's back now and just fine.

Janet