36% slope?!? Definitely have a Plan B ready to implement with all of your own help when the truck arrives, 'cause it wouldn't surprise me at all if the driver takes one look at the slope and laughs while sitting the safe on the curb. Did you happen to mention the driveway slope to Sturdy when you ordered the safe?
From Sturdy's FAQ page:
2. What am I to expect or not expect for the delivery?
The freight company will NOT go inside the house, however, they will go inside the garage or anywhere outside the home, considering you have a smooth surface (with nothing in the way) for a pallet jack to roll on from the location of the truck, to the location your looking to place the safe. They will not move the safe off the pallet, or unwrap it. Unless you requested a small truck, they will be full sized 48 footers, so make sure there is enough room for the driver to access you. If no trucks are able to reach your home, you may need to pick the safe up at the nearest terminal, and get a freight allowance, or we will work out some other solution. If you feel you could have issues with any freight trucks to your location (such as having a long unpaved, gravel driveway, low hanging trees, steep inclines or declines, etc.), please let us know in advance, or the freight company will only have the option of dropping it off curbside.
Once my 1200 lb Sturdy was on the road from Kalif last year I called the freight co to let them know I was on a cul-de-sac and they sent a 26' truck for the delivery. Driver wouldn't back into my 40' drive because he didn't want to risk scratching the truck with tree branches. No problem though, since the drive is paved and flat, and the pallet jack rolled right along. Mine is a 6' safe and just scraped through the garage door opening - forgot to consider the total height of the safe sitting on a pallet and pallet jack, but got very lucky. It was a husband/wife team that delivered it, it was the only item on the truck when they pulled up after lunch, and I let him handle all the moving - drivers/companies can get very particular about "help" because of equipment and liability concerns, and don't like unnecessary risks (YMMV).
They were polite, efficient, and didn't waste any time. As a1 said, these companies are in the business of moving freight between businesses/shipping centers designed for large trucks and with appropriate equipment already in place. Residential deliveries are possible if everything is simple and straightforward, otherwise it's getting dropped at the curb - they don't have the time, expertise, or equipment to tackle challenges.
On another note, I hope you'll be as pleased with your Sturdy as I am. This thing is built like a brick outhouse, the tolerances/gaps around the door are amazingly tight (like a few folds of notepaper tight), the rack allows plenty of space to get rifles of all sizes in and out without knocking them around, and with the door locked down there's barely a hint of movement when pulling back 'n forth on the handle. I'm REAL pleased.