are mounting holes for avalon batches 1,2,3 similar?

[tarui]

i'm designing a waterblock for the avalons and I noticed that there  are some differences in terms of number of mounting holes for batches 1,2,3

batch 1 has 5 holes for the header board
batch 2?
batch 3 has 4

batch 1 has 8 but only 6 used mounting holes to the case
batch 2,3 ??

my question is, while there are differences in number of mounting holes are they compatible? in other words, do they align together?