I would disagree that redosing is always a bad idea... if your LSD is expensive or hard to come by then yea it's quite a waste of it, but if you can afford missing a few hundred ug then redosing definitely has an effect. It's IME not really to bring back the peak, that phase is *much* more dependent on your initial dose, but when redosed if you don't wait too long - like almost the end of the trip - it can still make the trip more immersive and intense... but I would say typically not in that chaotic fucked up way as the peak usually is, but more in that crystal clear profundity kind of way. After the peak I can also feel like I adapt to it more and am more at peace, while in a more sneaky way I am still tripping hard (like seeing everything covered in symbols or matrix-style code, yet subtle and less dynamic).
K is a wonderful but also insane combination, much more reasonable on the tail-end - at peak it can be way overwhelming.