I'm mainly a Frenchcore producer. So when I'm using samples usually the tail is quite short and sometimes you want to extend them really long. I know, this would probably not apply to Hardstyle at all. Thing is I didn't notice any artifacts at all when using the stretch knob for Frenchcore kick tails and therefore was wondering if extending them even more was possible. For now I look for cycles in the waveform and duplicate them and chain them accurately (which works surprisingly well on simple waveforms like basses when done properly). So I'm not entirely sure how the stretch knob works at all but it surely seems to extend the tails a bit. The way I use Nimble is loading a sample, getting the fade right then duplicate the channel and solo kick and bass on either channel.  Maybe I can send you some samples so you can try if artifacts happen in those. And for how far I would like to stretch em, there actually is no limit really but up to approximately 600% or longer. And btw nice job on the pitching/timestretching algos. That's really what I love Nimble for. :D And thanks for looking into it man!