There is a warning on Shaptons (pros, I believe) not to soak them.
The problem with soaking Shaptons was that the surface of the binder
will get muddy and unusable (thatīs what it said)
Naniwas can be soaked, I believe.
If not, there would have been way more problems with the naniwas
being soaked, that come with a stand!
I think, maybe there is just something wrong with your 3k/8k?
IDK, if anybody else encountered such problems (I donīt soak, so I canīt tell)