It doesn’t matter if it’s 1 or 2 that go in first , just don’t locate the holes where there depressing the springs . The only steel plate that pushes on the springs is the last plate .
That middle plate would be for a clutch setup that had the short middle plate springs which doesn’t apply to your clutch .
Hopefully I explained it correctly lol .
Just looked at the partzilla diagram , do you have the short middle springs ?