Read right here.

What has gone wrong will be discussed in detail.

The basics are the trail is easy until Mirror Lake, afterward it beats the snot out of your body.

You will have to get water between Trailside Meadow and Trail Camp. The math says you need at least 4 L, people go with less and some people are out of water at Trail Crest.

You will need to read the weather out on the Great Western Divide before continuing from Trail Crest.

I own a guide book that is buried somewhere in the house, it has not been looked at in years and then to for routes other than the MMWT.