I was the only cc.com'r in the group but the others are lurking here from time to time. We took four days:
1) TH to US Cabin Camp (we went past the turn to the river, came back in the morning)
2) US Cabin to Perfect Pass (via the impasse at the shoulder of Whatcom)
3) Perfect Pass to summit, bushwack back down around impasse to a ways above the impasse in the last heather before snow on easy ridge.
4) Out to TH