How many spacers are on your stop/,did you add to take out the bottom slack but still maintain full clutch in for shifting? I have the BMS stop.
i had 3 rubber spacers originally, and added 2 sets of 2 washers between those.
i'm not convinced about the longevity of the plastic prong with the additional length out and angle at which the clutch hits it, just a feeling, maybe it will snap one day. i just wanted to do a quick fix because the pedal stroke was throwing off my throttle / clutch timing.
a better solution would be a bolt of the appropriate diameter and 2x nuts that way making it infinitely adjustable to your liking and more durable.
with regards to full clutch in, just trial and error while in neutral - depress clutch and listen for the spinning intermediate plate. the spacing i used could easily be increased in my case, the clutch is free quite some way still but not annoyingly so.