Glad to help. The appliance dolly is man's best friend. I've moved water heaters (old out and new in), safes, freezers, washers, dryers, big printers, furniture, refrigerators, etc... by myself many times. A couple strong bodies under it and a couple above it and you will be fine. You could even use a strong rope and pulleys on the handles and lower it down the steps if you have a good anchor above and not enough folks, but several folks should do it. If you took out 100 pounds of brick, it will weigh 800. 4 people, that's only 200 per person, on a slope, so its less.
I don't know about you, but I weigh well over 200 and I don't have a problem lifting myself off the floor, a couch, up a ladder, stairs, etc.... people are a lot stronger than they give themselves credit for. Its not like they're trying to bench press 200. They're controlling the weight going down a ramp. If I was there, I'd give you a hand. Just plan it out before you commit to the drop. Good luck! :thumbsup: