Edit:the picture numbers for downtiering are wrong, but the text above them is correct.
bump for pics n stuff:
normally when you put a mat/resin into 2nd column 2nd row, this happens

After a normal downtier (2nd column 1 row), you will get 1-2 mats per mat downtiered (in this case 40-80 t4 resins; from 40 t5 resins):
The numbers are wrong but the text is correct.
Note:no idea how the randoming system works when it comes to downtiering.
Multi uptier/downtiering which I'm proposing should look like this:
Double downtier gives 1-4 of a 2 tiers lower mat (40 t5 resins -> 40-160 t3 resins):
The numbers are wrong but the text is correct.
Triple downtier gives 1-6 of a 3 tiers lower mat (40 t5 resins -> 40-320 t2 resins):
The numbers are wrong but the text is correct.
Multi uptier:
Normal uptier (40 t5 resins - 20 t6 resisns)
Double uptier (40 t5 resins - 10 t7 resins):
Triple uptier (40 t5 resins - 5 t8 resins):
Edit:I'm stupid...