Thought I'd take a minute or two to chime in on this topic.
I first attempted this tease a week or so ago. As is my norm, my first run-through of any tease is done "blind"; meaning that I don't do any forum research about it or anything, so as to be fully unaware about the tease's contents.
I have to admit, the first time I did the tease, I took several breaks. As can be guessed, I ended up resulting in not getting a code on that first attempt.
A little research at that point verified that the codes weren't a certainty, and speculation on my part that a better performance (not needing a break), would up the odds of getting a code.
As I type this, I've gotten several codes, but have not been told to advance to Stroke Training 02 yet.

Am hoping that I get to make that leap soon.
Anyway, I also just wanted to say a few other things about my experience thus far...
I have to commend you on the photoset selection. Even with repeating images, I don't get bored. As a "leg man", there's plenty of pics that I really like, while having enough for the fans of any specific part of a female's anatomy.
"Stroking without edging", at least in my opinion, isn't something that there's enough of in teases. It prolongs the frustrating agony, which is a
very good thing. Kudos to you for making a tease dedicated to the subject.
I don't want to leave a really long post, so I'll briefly say that I look forward to whatever teases you come up with in the future, am already looking forward to earning my way into Part 2 of this tease, and eagerly await being frustrated by whatever devious teases you might cook up for us fortunate fellas.