I just read through that thread, and with respect to the delayed FIN, it seems like that happens when using PUP machines, because of how the FOUTs of PUP machines overlap the beginning of the loop, which is by design. But, someone reported that on regular recorders, the FOUT is applied at the end.
In your experience, are regular recorders delaying the placement of the fade in by the amount you specify in the FIN parameter?