Can you give us a description of exactly what you did during the process--kept the roots wet or let them dry, pruned the roots or not & how much if you did, and what the roots looked like? Pictures of the roots and the mix?

"Adequate water" means what exactly?

You are correct about repotting during a heat not being the wisest choice. But hindsight is often 20/20 as they say and if the old media was that problematic, waiting could have been risky as well.

Your plants sound like they are showing signs of trauma from the repot. Litterbug's Qs are spot on. IF, for example, you removed all -- or close to it -- of the old media (which you should have) then you most certainly and unavoidably stripped the roots of their delicate root hairs. These structures do most of the water absorption. Until new ones can be grown, the plants will have difficulty in taking up water. This is even more problematic when temps are high and the plants are transpiring more. Also, the plants may be experiencing quite a bit of root loss as roots which were accustomed to a very moist media must now try to adapt to a far airier/drier one. Until they adapt or new roots are grown, water uptake will be difficult.

Skydiver, if you're still around, are you checking soil moisture with a dowel/disposable chopstick/wooden skewer? It's a fast, easy and more reliable way to know exactly what's going on in there than any other method, including sticking your finger into the top of the pot. I'll post a summary if you'd like.

Next time, repot in spring before they leaf out. It is FAR less stressful.

Al