Its a pretty good video however it miss out 2 very important steps from my experiance with Stans: 1: Using soapy water to helps the tire pop out and seal against the rim. It also help you to spot where the tire is leaking from because of the bubbles it creates. Which will allow you to.... 2: shake the tire to allow the sealant to cover the tire and seal between the rim & tire. Going for a ride does not do this well enough. I've done quite a few Maxxis 2.5 DH High Rollers and they are a bit of a bitch to do. I just cant get them to seat properly without a compressed air line and soap, it may be different with xc tires. I've done them on MTX and deemax rims and they both work about the same for me. It takes a bit of time but I have never had problems with them once sorted. You really have to get them leak free the first time. If not its very hard to get them sealed if there is a small leak more than a day of so later unless you remove the valve cores and inject more sealant. My maxxis seemed to leak from some of the little rubber spike things in the side walls from the moulding process. You would never notice that without soap and riding your bike would probably not solve this. I usually pump them to 50-60psi just to get them seated and sealed, use soap to find the leaks and shake till all the leaks are gone. I think it take 30-60 mins per tire to get a perfect result. The Stans video is also very usefull