Peter - your post caught my eye. I, too, had ordered directly from Serious the AK-47 - some White Russian too. I took just 4 to grow out, saved the rest. The females from these were incredible plants. I kept these as mothers, and after several years the AK just decided to start flowering. I was really disappointed, ;(because I've heard of people keeping mothers going indefinitely by just recloning them.
When I gave her up, I started some new seeds from the original order - sprouted right up, got the female, and started cloning. This one wasn't half the plant the other one was - different shape, flowers not as dense. And, worst of all, it behaved like a hermaphrodite. About 4 weeks in I'd see tiny little bananas sticking out of some ovules - not even a true male flower - along with a tiny white "pretend" seed! :sign0065: I thought it was me, my nutrients, some unknown stress.
I went crazy trying to figure it out. After a whole bunch of doing and reading and pulling my hair out, I emailed Simon at Serious. I described the problems, and asked if the age of the seeds could cause this (I'd kept some from the original order several years, in the fridge). He responded and said what I had was definitely a "form of maleness", but that he believed his seeds wouldn't do this. :evilgrin0040:He also said the age of seeds wouldn't cause this.
I had the same experience with the White Russian later on. Some fantastic plants, some terrible.
I'm glad you wrote - your experience lends weight to what I was thinking - it isn't stable enough. I think F1 hybrids are what are usually sold - and they're good strong plants, and some variation is supposed to be expected. But IMHO, I think the amount is too great on these varieties, and needs to be dialed back somehow - especially if money is tight and we don't want to sprout up our entire order all at once, then grow it all out, flower it, keep clones of each before they flower, and go back and keep those that were best after the results are in!!! Lotsa work - maybe my expectations are out of whack, but when seeds cost so much, I would think one wouldn't have to go through quite so much.
If you have some other seeds from your order, I'd say get'em goin'. You'll probably find a star in there.