So FL sales replied with a Preform file for the fish that they were going to print on a Form3 - however nearly all the support contact points were 0.6mm and a couple were 0.45mm: sales F3 Preform file1
This is a huge backward step from the support structure I use on Form2 which uses 0.3mm and 0.15mm contact points - and I said so.
They responded very quickly with sales F3 preform file2 in which they have changed the contact point size to 0.2mm for new supports, but left the existing contact touch point sizes unchanged. No actual support changes have been made to the file.
This exercise now seems at risk of devolving into a large waste of time with no useful conclusions - so apologies to those who might have been interested in an F2-F3 shootout - it’s not happening in this topic. I’ve asked sales to cancel my order.