Just a tip I received from Renee at Core3d support.
In Scanit Dental, when scanning the occlusion, take the die(s) out. It's one less chance for yours dies to move either from sticking the arch in the putty, or drop when the scan rotates. I know the dies can be waxed in if their a little loose. You can then you can use that time to put the die(s) in the putty for the upcoming die scan. It worked great for a single unit case, as well as a #18,19 fcz case.