I hate to disagree with you on this one dr. who and i could very well be wrong but looking at the most recent pic. he is talking about the smallest one on the front left. and im not saying he has a heat problem now, but as you know what ever stress the plant goes through will show alot more in the 7th to 8th week. at any rate the main thing is willy is ok and that is all that matersI sure don't see any heat stress on that.......Maybe it's a pheno trait.
At any rate they look just FINE and I hear they can Herm - don't see any hermming so stress is off the table as a problem here.
Kinda cool though, ain't it?