Pretty good! I like how he is fanatical about cleaning everything carefully. It is possible to change the front sprocket without draining the oil by simply leaning the bike on its right side and waiting a few minutes for the oil to drain into the engine. Having pinched the wires once myself I would be even more thorough in making sure they are not pinched by looking all the way around the side case after installing the bolts barely finger tight and using a bright light and inspection mirror to look into the sprocket cavity.
I went the other direction with a 13 tooth front, and that sprocket did not use bolts but rather a C ring to hold it on, and it could move as much as 1/4 inch in and out. It lasted 11,000 miles.
Also, I learned not to use 31 ft./lbs. for the drain bolt, but rather 30. It is easier to remove that way after 2,000 miles, if you take your oil that far. I only go to 1,000 nowadays.