Hi Anders,
I don’t have a idea about the size of the regrind, and how good it will flow. . . do you have maybe pictures and dimensions of it?
To be on the save side maybe we can use a HO-neckpiece with a single small insert. Then there is space of 172x56 mm next to the insert.
Outlet of the HO-neckpiece is also 90x90
Should this be ok?
Comparing with a nst90 ( with single insert) this is 132x38 mm
desige