I'll give the Z distance option a try ... as soon as the print head is operational again (multiple disconnect UH-OHs this night). In the mean time, we designed a 3mm x 8mm (DxL) pin under the flat surface of our parts to enforce support structure between raft and part.
Btw., a spare print head would come in handy ... this morning an email said "To FLUX Delta Users - Product Improvement and Upgrade Kit" - perfect!
Where to buy? When available? Urgent! (I'll better make a new thread out of it)