i know this has been done before here, i am sure someone else has been in the same situation. my 600 lb boiler has to go up 2 stairs from my garage into my kitchen, through my kitchen, then down a narrow set of steps (about 12), but, i wont be able to go all the way down the starirs, about 2-3 rungs before the bottom i will have to turn it then get it to the floor. so i am wondering if i will be able to handle this thing with a good moving dolly, the one with the strap and the little tracks for sliding down steps, or.....should i strap this thing to a flat dolly, make a ramp out of my steps, and lower down the steps with lots of large people and rope? i know i will have to do some work on my steps with some temp bracing. but as far as the rest, i am open for suggestions.