Just returned today. Got permit changed to Rafferty Creek at the advice of a nice wilderness ranger, spend the first night in Vogelsang, the only people there. Some snow on the trail for about 0.4 miles just before Vogelsang, I post holed a couple of times, and would not have continued except we met a day hiker who told us the last 15 minutes to Vogelsang were a slog, but very well foot printed, which both turned out to be true. Spend second night just beyond Babcock creek at the apex of the valley beside Fletcher Creek, then to Echo Valley for 3rd night. Then on to LYV and up HD on June 24, with my daughter on her 18th birthday, then spent last night in the backpackers camp in the valley, caught the 8 AM shuttle to our car in TM and then back home. Very much appreciated the advice of the ranger at the permit station who made the trip doable. I had decided that what I proposed wasn't legal, I just wanted to use the permit I had and the HD permits for my daughters birthday, didn't want it ruined by heavy snow if there was another way down. Thanks for all the advice. Pics at the link below.
https://www.flickr.com/gp/nineofharts/2H983J